Home / 15,176.70-20,947.20-9,862.28

Finding the Fourth Proportional to 15,176.70, 20,947.20 and 9,862.28

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Solution

The fourth proportional to 15,176.70, 20,947.20 and 9,862.28 is: 13,612.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,176.70 : 20,947.20 = 9,862.28 : x
  2. Step 2: Convert to fraction form
    15,176.70/20,947.20 = 9,862.28/x
  3. Step 3: Cross multiply
    15,176.70x = 20,947.20 × 9,862.28
  4. Step 4: Simplify right side
    15,176.70x = 206,587,151.62
  5. Step 5: Solve for x
    x = 206,587,151.62/15,176.70
  6. Step 6: Final answer
    x = 13,612.13

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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.