Home / 38,931.76-58,414.38-12,644.56

Finding the Fourth Proportional to 38,931.76, 58,414.38 and 12,644.56

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Solution

The fourth proportional to 38,931.76, 58,414.38 and 12,644.56 is: 18,972.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,931.76 : 58,414.38 = 12,644.56 : x
  2. Step 2: Convert to fraction form
    38,931.76/58,414.38 = 12,644.56/x
  3. Step 3: Cross multiply
    38,931.76x = 58,414.38 × 12,644.56
  4. Step 4: Simplify right side
    38,931.76x = 738,624,132.77
  5. Step 5: Solve for x
    x = 738,624,132.77/38,931.76
  6. Step 6: Final answer
    x = 18,972.28

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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.