Home / 20,637.66-28,479.19-11,206.02

Finding the Fourth Proportional to 20,637.66, 28,479.19 and 11,206.02

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Solution

The fourth proportional to 20,637.66, 28,479.19 and 11,206.02 is: 15,463.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,637.66 : 28,479.19 = 11,206.02 : x
  2. Step 2: Convert to fraction form
    20,637.66/28,479.19 = 11,206.02/x
  3. Step 3: Cross multiply
    20,637.66x = 28,479.19 × 11,206.02
  4. Step 4: Simplify right side
    20,637.66x = 319,138,372.72
  5. Step 5: Solve for x
    x = 319,138,372.72/20,637.66
  6. Step 6: Final answer
    x = 15,463.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.