Home / 12,875,403.20-19,313,104.80-8,086,456.40

Finding the Fourth Proportional to 12,875,403.20, 19,313,104.80 and 8,086,456.40

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Solution

The fourth proportional to 12,875,403.20, 19,313,104.80 and 8,086,456.40 is: 12,129,684.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,875,403.20 : 19,313,104.80 = 8,086,456.40 : x
  2. Step 2: Convert to fraction form
    12,875,403.20/19,313,104.80 = 8,086,456.40/x
  3. Step 3: Cross multiply
    12,875,403.20x = 19,313,104.80 × 8,086,456.40
  4. Step 4: Simplify right side
    12,875,403.20x = 156,174,579,913,830.72
  5. Step 5: Solve for x
    x = 156,174,579,913,830.72/12,875,403.20
  6. Step 6: Final answer
    x = 12,129,684.60

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Similar ratio
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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.