Home / 18,988.57-26,169.10-14,789.53

Finding the Fourth Proportional to 18,988.57, 26,169.10 and 14,789.53

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Solution

The fourth proportional to 18,988.57, 26,169.10 and 14,789.53 is: 20,382.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.57 : 26,169.10 = 14,789.53 : x
  2. Step 2: Convert to fraction form
    18,988.57/26,169.10 = 14,789.53/x
  3. Step 3: Cross multiply
    18,988.57x = 26,169.10 × 14,789.53
  4. Step 4: Simplify right side
    18,988.57x = 387,028,689.52
  5. Step 5: Solve for x
    x = 387,028,689.52/18,988.57
  6. Step 6: Final answer
    x = 20,382.19

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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.