Home / 28,089.10-38,760.15-15,513.04

Finding the Fourth Proportional to 28,089.10, 38,760.15 and 15,513.04

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Solution

The fourth proportional to 28,089.10, 38,760.15 and 15,513.04 is: 21,406.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,089.10 : 38,760.15 = 15,513.04 : x
  2. Step 2: Convert to fraction form
    28,089.10/38,760.15 = 15,513.04/x
  3. Step 3: Cross multiply
    28,089.10x = 38,760.15 × 15,513.04
  4. Step 4: Simplify right side
    28,089.10x = 601,287,757.36
  5. Step 5: Solve for x
    x = 601,287,757.36/28,089.10
  6. Step 6: Final answer
    x = 21,406.44

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Half scale
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Double scale
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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.