Home / 18,815.64-25,965.88-10,318.53

Finding the Fourth Proportional to 18,815.64, 25,965.88 and 10,318.53

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Solution

The fourth proportional to 18,815.64, 25,965.88 and 10,318.53 is: 14,239.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.64 : 25,965.88 = 10,318.53 : x
  2. Step 2: Convert to fraction form
    18,815.64/25,965.88 = 10,318.53/x
  3. Step 3: Cross multiply
    18,815.64x = 25,965.88 × 10,318.53
  4. Step 4: Simplify right side
    18,815.64x = 267,929,711.76
  5. Step 5: Solve for x
    x = 267,929,711.76/18,815.64
  6. Step 6: Final answer
    x = 14,239.73

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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.