Home / 19,972.90-29,930.19-11,210.32

Finding the Fourth Proportional to 19,972.90, 29,930.19 and 11,210.32

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Solution

The fourth proportional to 19,972.90, 29,930.19 and 11,210.32 is: 16,799.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,972.90 : 29,930.19 = 11,210.32 : x
  2. Step 2: Convert to fraction form
    19,972.90/29,930.19 = 11,210.32/x
  3. Step 3: Cross multiply
    19,972.90x = 29,930.19 × 11,210.32
  4. Step 4: Simplify right side
    19,972.90x = 335,527,007.56
  5. Step 5: Solve for x
    x = 335,527,007.56/19,972.90
  6. Step 6: Final answer
    x = 16,799.11

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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.