Home / 28,719.52-39,629.52-18,105.12

Finding the Fourth Proportional to 28,719.52, 39,629.52 and 18,105.12

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Solution

The fourth proportional to 28,719.52, 39,629.52 and 18,105.12 is: 24,982.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,719.52 : 39,629.52 = 18,105.12 : x
  2. Step 2: Convert to fraction form
    28,719.52/39,629.52 = 18,105.12/x
  3. Step 3: Cross multiply
    28,719.52x = 39,629.52 × 18,105.12
  4. Step 4: Simplify right side
    28,719.52x = 717,497,215.14
  5. Step 5: Solve for x
    x = 717,497,215.14/28,719.52
  6. Step 6: Final answer
    x = 24,982.91

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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.