Home / 18,615.28-25,689.66-10,660.06

Finding the Fourth Proportional to 18,615.28, 25,689.66 and 10,660.06

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Solution

The fourth proportional to 18,615.28, 25,689.66 and 10,660.06 is: 14,711.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,615.28 : 25,689.66 = 10,660.06 : x
  2. Step 2: Convert to fraction form
    18,615.28/25,689.66 = 10,660.06/x
  3. Step 3: Cross multiply
    18,615.28x = 25,689.66 × 10,660.06
  4. Step 4: Simplify right side
    18,615.28x = 273,853,316.98
  5. Step 5: Solve for x
    x = 273,853,316.98/18,615.28
  6. Step 6: Final answer
    x = 14,711.21

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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.