Home / 28,188.18-38,902.05-15,614.10

Finding the Fourth Proportional to 28,188.18, 38,902.05 and 15,614.10

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Solution

The fourth proportional to 28,188.18, 38,902.05 and 15,614.10 is: 21,548.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,188.18 : 38,902.05 = 15,614.10 : x
  2. Step 2: Convert to fraction form
    28,188.18/38,902.05 = 15,614.10/x
  3. Step 3: Cross multiply
    28,188.18x = 38,902.05 × 15,614.10
  4. Step 4: Simplify right side
    28,188.18x = 607,420,498.91
  5. Step 5: Solve for x
    x = 607,420,498.91/28,188.18
  6. Step 6: Final answer
    x = 21,548.77

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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.