Home / 15,185.28-20,957.52-8,897.66

Finding the Fourth Proportional to 15,185.28, 20,957.52 and 8,897.66

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Solution

The fourth proportional to 15,185.28, 20,957.52 and 8,897.66 is: 12,279.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,185.28 : 20,957.52 = 8,897.66 : x
  2. Step 2: Convert to fraction form
    15,185.28/20,957.52 = 8,897.66/x
  3. Step 3: Cross multiply
    15,185.28x = 20,957.52 × 8,897.66
  4. Step 4: Simplify right side
    15,185.28x = 186,472,887.40
  5. Step 5: Solve for x
    x = 186,472,887.40/15,185.28
  6. Step 6: Final answer
    x = 12,279.85

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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.