Home / 18,689.13-25,785.30-10,622.18

Finding the Fourth Proportional to 18,689.13, 25,785.30 and 10,622.18

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Solution

The fourth proportional to 18,689.13, 25,785.30 and 10,622.18 is: 14,655.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.13 : 25,785.30 = 10,622.18 : x
  2. Step 2: Convert to fraction form
    18,689.13/25,785.30 = 10,622.18/x
  3. Step 3: Cross multiply
    18,689.13x = 25,785.30 × 10,622.18
  4. Step 4: Simplify right side
    18,689.13x = 273,895,976.14
  5. Step 5: Solve for x
    x = 273,895,976.14/18,689.13
  6. Step 6: Final answer
    x = 14,655.36

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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.