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Finding the Fourth Proportional to 18,840.60, 28,264.17 and 7,753.32

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Solution

The fourth proportional to 18,840.60, 28,264.17 and 7,753.32 is: 11,631.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,840.60 : 28,264.17 = 7,753.32 : x
  2. Step 2: Convert to fraction form
    18,840.60/28,264.17 = 7,753.32/x
  3. Step 3: Cross multiply
    18,840.60x = 28,264.17 × 7,753.32
  4. Step 4: Simplify right side
    18,840.60x = 219,141,154.54
  5. Step 5: Solve for x
    x = 219,141,154.54/18,840.60
  6. Step 6: Final answer
    x = 11,631.33

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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.