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Finding the Fourth Proportional to 18,832.80, 28,230.24 and 9,458.40

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Solution

The fourth proportional to 18,832.80, 28,230.24 and 9,458.40 is: 14,178.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,832.80 : 28,230.24 = 9,458.40 : x
  2. Step 2: Convert to fraction form
    18,832.80/28,230.24 = 9,458.40/x
  3. Step 3: Cross multiply
    18,832.80x = 28,230.24 × 9,458.40
  4. Step 4: Simplify right side
    18,832.80x = 267,012,902.02
  5. Step 5: Solve for x
    x = 267,012,902.02/18,832.80
  6. Step 6: Final answer
    x = 14,178.08

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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.