Home / 21,000,425.40-31,500,638.10-15,260,862.60

Finding the Fourth Proportional to 21,000,425.40, 31,500,638.10 and 15,260,862.60

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Solution

The fourth proportional to 21,000,425.40, 31,500,638.10 and 15,260,862.60 is: 22,891,293.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,425.40 : 31,500,638.10 = 15,260,862.60 : x
  2. Step 2: Convert to fraction form
    21,000,425.40/31,500,638.10 = 15,260,862.60/x
  3. Step 3: Cross multiply
    21,000,425.40x = 31,500,638.10 × 15,260,862.60
  4. Step 4: Simplify right side
    21,000,425.40x = 480,726,909,856,425.06
  5. Step 5: Solve for x
    x = 480,726,909,856,425.06/21,000,425.40
  6. Step 6: Final answer
    x = 22,891,293.90

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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.