Home / 28,530.88-39,359.52-18,462.60

Finding the Fourth Proportional to 28,530.88, 39,359.52 and 18,462.60

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Solution

The fourth proportional to 28,530.88, 39,359.52 and 18,462.60 is: 25,469.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,530.88 : 39,359.52 = 18,462.60 : x
  2. Step 2: Convert to fraction form
    28,530.88/39,359.52 = 18,462.60/x
  3. Step 3: Cross multiply
    28,530.88x = 39,359.52 × 18,462.60
  4. Step 4: Simplify right side
    28,530.88x = 726,679,073.95
  5. Step 5: Solve for x
    x = 726,679,073.95/28,530.88
  6. Step 6: Final answer
    x = 25,469.91

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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.