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Finding the Fourth Proportional to 38,693.40, 58,050.90 and 18,972.60

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Solution

The fourth proportional to 38,693.40, 58,050.90 and 18,972.60 is: 28,464.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,693.40 : 58,050.90 = 18,972.60 : x
  2. Step 2: Convert to fraction form
    38,693.40/58,050.90 = 18,972.60/x
  3. Step 3: Cross multiply
    38,693.40x = 58,050.90 × 18,972.60
  4. Step 4: Simplify right side
    38,693.40x = 1,101,376,505.34
  5. Step 5: Solve for x
    x = 1,101,376,505.34/38,693.40
  6. Step 6: Final answer
    x = 28,464.20

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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.