Home / 19,937.18-29,905.80-18,719.29

Finding the Fourth Proportional to 19,937.18, 29,905.80 and 18,719.29

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Solution

The fourth proportional to 19,937.18, 29,905.80 and 18,719.29 is: 28,078.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,937.18 : 29,905.80 = 18,719.29 : x
  2. Step 2: Convert to fraction form
    19,937.18/29,905.80 = 18,719.29/x
  3. Step 3: Cross multiply
    19,937.18x = 29,905.80 × 18,719.29
  4. Step 4: Simplify right side
    19,937.18x = 559,815,342.88
  5. Step 5: Solve for x
    x = 559,815,342.88/19,937.18
  6. Step 6: Final answer
    x = 28,078.96

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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.