Home / 23,115.99-31,900.14-12,505.71

Finding the Fourth Proportional to 23,115.99, 31,900.14 and 12,505.71

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Solution

The fourth proportional to 23,115.99, 31,900.14 and 12,505.71 is: 17,257.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,115.99 : 31,900.14 = 12,505.71 : x
  2. Step 2: Convert to fraction form
    23,115.99/31,900.14 = 12,505.71/x
  3. Step 3: Cross multiply
    23,115.99x = 31,900.14 × 12,505.71
  4. Step 4: Simplify right side
    23,115.99x = 398,933,899.80
  5. Step 5: Solve for x
    x = 398,933,899.80/23,115.99
  6. Step 6: Final answer
    x = 17,257.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.