Home / 21,130,948.20-31,696,422.30-13,017,615.60

Finding the Fourth Proportional to 21,130,948.20, 31,696,422.30 and 13,017,615.60

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Solution

The fourth proportional to 21,130,948.20, 31,696,422.30 and 13,017,615.60 is: 19,526,423.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130,948.20 : 31,696,422.30 = 13,017,615.60 : x
  2. Step 2: Convert to fraction form
    21,130,948.20/31,696,422.30 = 13,017,615.60/x
  3. Step 3: Cross multiply
    21,130,948.20x = 31,696,422.30 × 13,017,615.60
  4. Step 4: Simplify right side
    21,130,948.20x = 412,611,841,396,667.88
  5. Step 5: Solve for x
    x = 412,611,841,396,667.88/21,130,948.20
  6. Step 6: Final answer
    x = 19,526,423.40

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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.