Home / 15,144.52-20,881.56-10,366.78

Finding the Fourth Proportional to 15,144.52, 20,881.56 and 10,366.78

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Solution

The fourth proportional to 15,144.52, 20,881.56 and 10,366.78 is: 14,293.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,144.52 : 20,881.56 = 10,366.78 : x
  2. Step 2: Convert to fraction form
    15,144.52/20,881.56 = 10,366.78/x
  3. Step 3: Cross multiply
    15,144.52x = 20,881.56 × 10,366.78
  4. Step 4: Simplify right side
    15,144.52x = 216,474,538.58
  5. Step 5: Solve for x
    x = 216,474,538.58/15,144.52
  6. Step 6: Final answer
    x = 14,293.92

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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.