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Finding the Fourth Proportional to 38,692, 58,034.94 and 12,389.68

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Solution

The fourth proportional to 38,692, 58,034.94 and 12,389.68 is: 18,583.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,692 : 58,034.94 = 12,389.68 : x
  2. Step 2: Convert to fraction form
    38,692/58,034.94 = 12,389.68/x
  3. Step 3: Cross multiply
    38,692x = 58,034.94 × 12,389.68
  4. Step 4: Simplify right side
    38,692x = 719,034,335.42
  5. Step 5: Solve for x
    x = 719,034,335.42/38,692
  6. Step 6: Final answer
    x = 18,583.54

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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.