Home / 18,689.13-25,790.88-10,305.63

Finding the Fourth Proportional to 18,689.13, 25,790.88 and 10,305.63

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Solution

The fourth proportional to 18,689.13, 25,790.88 and 10,305.63 is: 14,221.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.13 : 25,790.88 = 10,305.63 : x
  2. Step 2: Convert to fraction form
    18,689.13/25,790.88 = 10,305.63/x
  3. Step 3: Cross multiply
    18,689.13x = 25,790.88 × 10,305.63
  4. Step 4: Simplify right side
    18,689.13x = 265,791,266.65
  5. Step 5: Solve for x
    x = 265,791,266.65/18,689.13
  6. Step 6: Final answer
    x = 14,221.70

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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.