Home / 28,469.52-39,280.48-19,519.76

Finding the Fourth Proportional to 28,469.52, 39,280.48 and 19,519.76

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Solution

The fourth proportional to 28,469.52, 39,280.48 and 19,519.76 is: 26,932.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,469.52 : 39,280.48 = 19,519.76 : x
  2. Step 2: Convert to fraction form
    28,469.52/39,280.48 = 19,519.76/x
  3. Step 3: Cross multiply
    28,469.52x = 39,280.48 × 19,519.76
  4. Step 4: Simplify right side
    28,469.52x = 766,745,542.28
  5. Step 5: Solve for x
    x = 766,745,542.28/28,469.52
  6. Step 6: Final answer
    x = 26,932.16

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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.