Home / 21,000,426.90-31,500,640.35-15,260,864.10

Finding the Fourth Proportional to 21,000,426.90, 31,500,640.35 and 15,260,864.10

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Solution

The fourth proportional to 21,000,426.90, 31,500,640.35 and 15,260,864.10 is: 22,891,296.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,426.90 : 31,500,640.35 = 15,260,864.10 : x
  2. Step 2: Convert to fraction form
    21,000,426.90/31,500,640.35 = 15,260,864.10/x
  3. Step 3: Cross multiply
    21,000,426.90x = 31,500,640.35 × 15,260,864.10
  4. Step 4: Simplify right side
    21,000,426.90x = 480,726,991,444,326.44
  5. Step 5: Solve for x
    x = 480,726,991,444,326.44/21,000,426.90
  6. Step 6: Final answer
    x = 22,891,296.15

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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.