Home / 15,306.24-21,121.20-8,934.24

Finding the Fourth Proportional to 15,306.24, 21,121.20 and 8,934.24

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Solution

The fourth proportional to 15,306.24, 21,121.20 and 8,934.24 is: 12,328.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,306.24 : 21,121.20 = 8,934.24 : x
  2. Step 2: Convert to fraction form
    15,306.24/21,121.20 = 8,934.24/x
  3. Step 3: Cross multiply
    15,306.24x = 21,121.20 × 8,934.24
  4. Step 4: Simplify right side
    15,306.24x = 188,701,869.89
  5. Step 5: Solve for x
    x = 188,701,869.89/15,306.24
  6. Step 6: Final answer
    x = 12,328.43

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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.