Home / 15,117.76-20,862.96-9,150.52

Finding the Fourth Proportional to 15,117.76, 20,862.96 and 9,150.52

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Solution

The fourth proportional to 15,117.76, 20,862.96 and 9,150.52 is: 12,627.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.76 : 20,862.96 = 9,150.52 : x
  2. Step 2: Convert to fraction form
    15,117.76/20,862.96 = 9,150.52/x
  3. Step 3: Cross multiply
    15,117.76x = 20,862.96 × 9,150.52
  4. Step 4: Simplify right side
    15,117.76x = 190,906,932.74
  5. Step 5: Solve for x
    x = 190,906,932.74/15,117.76
  6. Step 6: Final answer
    x = 12,627.99

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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.