Home / 42,366-63,536.20-12,781.36

Finding the Fourth Proportional to 42,366, 63,536.20 and 12,781.36

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Solution

The fourth proportional to 42,366, 63,536.20 and 12,781.36 is: 19,168.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,366 : 63,536.20 = 12,781.36 : x
  2. Step 2: Convert to fraction form
    42,366/63,536.20 = 12,781.36/x
  3. Step 3: Cross multiply
    42,366x = 63,536.20 × 12,781.36
  4. Step 4: Simplify right side
    42,366x = 812,079,045.23
  5. Step 5: Solve for x
    x = 812,079,045.23/42,366
  6. Step 6: Final answer
    x = 19,168.18

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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.