Home / 19,937.31-29,905.99-18,719.42

Finding the Fourth Proportional to 19,937.31, 29,905.99 and 18,719.42

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Solution

The fourth proportional to 19,937.31, 29,905.99 and 18,719.42 is: 28,079.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,937.31 : 29,905.99 = 18,719.42 : x
  2. Step 2: Convert to fraction form
    19,937.31/29,905.99 = 18,719.42/x
  3. Step 3: Cross multiply
    19,937.31x = 29,905.99 × 18,719.42
  4. Step 4: Simplify right side
    19,937.31x = 559,822,591.00
  5. Step 5: Solve for x
    x = 559,822,591.00/19,937.31
  6. Step 6: Final answer
    x = 28,079.15

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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.