Home / 28,425.90-42,647.76-11,793.78

Finding the Fourth Proportional to 28,425.90, 42,647.76 and 11,793.78

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Solution

The fourth proportional to 28,425.90, 42,647.76 and 11,793.78 is: 17,694.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,425.90 : 42,647.76 = 11,793.78 : x
  2. Step 2: Convert to fraction form
    28,425.90/42,647.76 = 11,793.78/x
  3. Step 3: Cross multiply
    28,425.90x = 42,647.76 × 11,793.78
  4. Step 4: Simplify right side
    28,425.90x = 502,978,298.93
  5. Step 5: Solve for x
    x = 502,978,298.93/28,425.90
  6. Step 6: Final answer
    x = 17,694.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.