Home / 28,505.12-39,320.24-17,876.30

Finding the Fourth Proportional to 28,505.12, 39,320.24 and 17,876.30

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Solution

The fourth proportional to 28,505.12, 39,320.24 and 17,876.30 is: 24,658.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,505.12 : 39,320.24 = 17,876.30 : x
  2. Step 2: Convert to fraction form
    28,505.12/39,320.24 = 17,876.30/x
  3. Step 3: Cross multiply
    28,505.12x = 39,320.24 × 17,876.30
  4. Step 4: Simplify right side
    28,505.12x = 702,900,120.33
  5. Step 5: Solve for x
    x = 702,900,120.33/28,505.12
  6. Step 6: Final answer
    x = 24,658.74

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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.