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Finding the Fourth Proportional to 28,262.80, 39,007.02 and 16,325.20

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Solution

The fourth proportional to 28,262.80, 39,007.02 and 16,325.20 is: 22,531.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,262.80 : 39,007.02 = 16,325.20 : x
  2. Step 2: Convert to fraction form
    28,262.80/39,007.02 = 16,325.20/x
  3. Step 3: Cross multiply
    28,262.80x = 39,007.02 × 16,325.20
  4. Step 4: Simplify right side
    28,262.80x = 636,797,402.90
  5. Step 5: Solve for x
    x = 636,797,402.90/28,262.80
  6. Step 6: Final answer
    x = 22,531.29

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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.