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Finding the Fourth Proportional to 28,167.84, 38,867.52 and 16,230.24

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Solution

The fourth proportional to 28,167.84, 38,867.52 and 16,230.24 is: 22,395.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,167.84 : 38,867.52 = 16,230.24 : x
  2. Step 2: Convert to fraction form
    28,167.84/38,867.52 = 16,230.24/x
  3. Step 3: Cross multiply
    28,167.84x = 38,867.52 × 16,230.24
  4. Step 4: Simplify right side
    28,167.84x = 630,829,177.80
  5. Step 5: Solve for x
    x = 630,829,177.80/28,167.84
  6. Step 6: Final answer
    x = 22,395.37

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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.