Home / 28,045.22-38,702.61-15,470.42

Finding the Fourth Proportional to 28,045.22, 38,702.61 and 15,470.42

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Solution

The fourth proportional to 28,045.22, 38,702.61 and 15,470.42 is: 21,349.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,045.22 : 38,702.61 = 15,470.42 : x
  2. Step 2: Convert to fraction form
    28,045.22/38,702.61 = 15,470.42/x
  3. Step 3: Cross multiply
    28,045.22x = 38,702.61 × 15,470.42
  4. Step 4: Simplify right side
    28,045.22x = 598,745,631.80
  5. Step 5: Solve for x
    x = 598,745,631.80/28,045.22
  6. Step 6: Final answer
    x = 21,349.29

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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.