Home / 18,718.38-25,836.98-11,169.99

Finding the Fourth Proportional to 18,718.38, 25,836.98 and 11,169.99

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Solution

The fourth proportional to 18,718.38, 25,836.98 and 11,169.99 is: 15,417.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.38 : 25,836.98 = 11,169.99 : x
  2. Step 2: Convert to fraction form
    18,718.38/25,836.98 = 11,169.99/x
  3. Step 3: Cross multiply
    18,718.38x = 25,836.98 × 11,169.99
  4. Step 4: Simplify right side
    18,718.38x = 288,598,752.38
  5. Step 5: Solve for x
    x = 288,598,752.38/18,718.38
  6. Step 6: Final answer
    x = 15,417.93

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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.