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Finding the Fourth Proportional to 28,045.60, 42,035.10 and 14,891.20

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Solution

The fourth proportional to 28,045.60, 42,035.10 and 14,891.20 is: 22,319.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,045.60 : 42,035.10 = 14,891.20 : x
  2. Step 2: Convert to fraction form
    28,045.60/42,035.10 = 14,891.20/x
  3. Step 3: Cross multiply
    28,045.60x = 42,035.10 × 14,891.20
  4. Step 4: Simplify right side
    28,045.60x = 625,953,081.12
  5. Step 5: Solve for x
    x = 625,953,081.12/28,045.60
  6. Step 6: Final answer
    x = 22,319.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.