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Finding the Fourth Proportional to 38,830.80, 58,231.80 and 15,452.40

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Solution

The fourth proportional to 38,830.80, 58,231.80 and 15,452.40 is: 23,172.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,830.80 : 58,231.80 = 15,452.40 : x
  2. Step 2: Convert to fraction form
    38,830.80/58,231.80 = 15,452.40/x
  3. Step 3: Cross multiply
    38,830.80x = 58,231.80 × 15,452.40
  4. Step 4: Simplify right side
    38,830.80x = 899,821,066.32
  5. Step 5: Solve for x
    x = 899,821,066.32/38,830.80
  6. Step 6: Final answer
    x = 23,172.87

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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.