Home / 19,929.28-27,488.24-13,115.04

Finding the Fourth Proportional to 19,929.28, 27,488.24 and 13,115.04

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Solution

The fourth proportional to 19,929.28, 27,488.24 and 13,115.04 is: 18,089.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,929.28 : 27,488.24 = 13,115.04 : x
  2. Step 2: Convert to fraction form
    19,929.28/27,488.24 = 13,115.04/x
  3. Step 3: Cross multiply
    19,929.28x = 27,488.24 × 13,115.04
  4. Step 4: Simplify right side
    19,929.28x = 360,509,367.13
  5. Step 5: Solve for x
    x = 360,509,367.13/19,929.28
  6. Step 6: Final answer
    x = 18,089.43

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1.5x scale

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.