Home / 25,115.88-34,658.76-13,785.12

Finding the Fourth Proportional to 25,115.88, 34,658.76 and 13,785.12

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Solution

The fourth proportional to 25,115.88, 34,658.76 and 13,785.12 is: 19,022.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,115.88 : 34,658.76 = 13,785.12 : x
  2. Step 2: Convert to fraction form
    25,115.88/34,658.76 = 13,785.12/x
  3. Step 3: Cross multiply
    25,115.88x = 34,658.76 × 13,785.12
  4. Step 4: Simplify right side
    25,115.88x = 477,775,165.65
  5. Step 5: Solve for x
    x = 477,775,165.65/25,115.88
  6. Step 6: Final answer
    x = 19,022.83

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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.