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Finding the Fourth Proportional to 28,200.60, 38,920.50 and 16,264.08

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Solution

The fourth proportional to 28,200.60, 38,920.50 and 16,264.08 is: 22,446.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,200.60 : 38,920.50 = 16,264.08 : x
  2. Step 2: Convert to fraction form
    28,200.60/38,920.50 = 16,264.08/x
  3. Step 3: Cross multiply
    28,200.60x = 38,920.50 × 16,264.08
  4. Step 4: Simplify right side
    28,200.60x = 633,006,125.64
  5. Step 5: Solve for x
    x = 633,006,125.64/28,200.60
  6. Step 6: Final answer
    x = 22,446.55

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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.