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Finding the Fourth Proportional to 28,045, 38,702.14 and 15,470.60

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Solution

The fourth proportional to 28,045, 38,702.14 and 15,470.60 is: 21,349.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,045 : 38,702.14 = 15,470.60 : x
  2. Step 2: Convert to fraction form
    28,045/38,702.14 = 15,470.60/x
  3. Step 3: Cross multiply
    28,045x = 38,702.14 × 15,470.60
  4. Step 4: Simplify right side
    28,045x = 598,745,327.08
  5. Step 5: Solve for x
    x = 598,745,327.08/28,045
  6. Step 6: Final answer
    x = 21,349.45

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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.