Home / 38,690.54-58,037.19-12,391.87

Finding the Fourth Proportional to 38,690.54, 58,037.19 and 12,391.87

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Solution

The fourth proportional to 38,690.54, 58,037.19 and 12,391.87 is: 18,588.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,690.54 : 58,037.19 = 12,391.87 : x
  2. Step 2: Convert to fraction form
    38,690.54/58,037.19 = 12,391.87/x
  3. Step 3: Cross multiply
    38,690.54x = 58,037.19 × 12,391.87
  4. Step 4: Simplify right side
    38,690.54x = 719,188,961.50
  5. Step 5: Solve for x
    x = 719,188,961.50/38,690.54
  6. Step 6: Final answer
    x = 18,588.24

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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.