Home / 15,934.38-21,988.54-8,860.65

Finding the Fourth Proportional to 15,934.38, 21,988.54 and 8,860.65

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Solution

The fourth proportional to 15,934.38, 21,988.54 and 8,860.65 is: 12,227.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,934.38 : 21,988.54 = 8,860.65 : x
  2. Step 2: Convert to fraction form
    15,934.38/21,988.54 = 8,860.65/x
  3. Step 3: Cross multiply
    15,934.38x = 21,988.54 × 8,860.65
  4. Step 4: Simplify right side
    15,934.38x = 194,832,734.80
  5. Step 5: Solve for x
    x = 194,832,734.80/15,934.38
  6. Step 6: Final answer
    x = 12,227.19

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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.