Home / 18,615.38-25,711.16-12,316.82

Finding the Fourth Proportional to 18,615.38, 25,711.16 and 12,316.82

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Solution

The fourth proportional to 18,615.38, 25,711.16 and 12,316.82 is: 17,011.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,615.38 : 25,711.16 = 12,316.82 : x
  2. Step 2: Convert to fraction form
    18,615.38/25,711.16 = 12,316.82/x
  3. Step 3: Cross multiply
    18,615.38x = 25,711.16 × 12,316.82
  4. Step 4: Simplify right side
    18,615.38x = 316,679,539.57
  5. Step 5: Solve for x
    x = 316,679,539.57/18,615.38
  6. Step 6: Final answer
    x = 17,011.72

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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.