Home / 13,105,156,971.20-19,657,735,456.80-8,461,354,654.40

Finding the Fourth Proportional to 13,105,156,971.20, 19,657,735,456.80 and 8,461,354,654.40

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Solution

The fourth proportional to 13,105,156,971.20, 19,657,735,456.80 and 8,461,354,654.40 is: 12,692,031,981.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,105,156,971.20 : 19,657,735,456.80 = 8,461,354,654.40 : x
  2. Step 2: Convert to fraction form
    13,105,156,971.20/19,657,735,456.80 = 8,461,354,654.40/x
  3. Step 3: Cross multiply
    13,105,156,971.20x = 19,657,735,456.80 × 8,461,354,654.40
  4. Step 4: Simplify right side
    13,105,156,971.20x = 166,331,071,402,358,571,008
  5. Step 5: Solve for x
    x = 166,331,071,402,358,571,008/13,105,156,971.20
  6. Step 6: Final answer
    x = 12,692,031,981.60

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.