Home / 18,971.28-28,456.02-5,823.78

Finding the Fourth Proportional to 18,971.28, 28,456.02 and 5,823.78

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Solution

The fourth proportional to 18,971.28, 28,456.02 and 5,823.78 is: 8,735.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971.28 : 28,456.02 = 5,823.78 : x
  2. Step 2: Convert to fraction form
    18,971.28/28,456.02 = 5,823.78/x
  3. Step 3: Cross multiply
    18,971.28x = 28,456.02 × 5,823.78
  4. Step 4: Simplify right side
    18,971.28x = 165,721,600.16
  5. Step 5: Solve for x
    x = 165,721,600.16/18,971.28
  6. Step 6: Final answer
    x = 8,735.39

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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.