Home / 15,306.82-21,126.36-8,934.16

Finding the Fourth Proportional to 15,306.82, 21,126.36 and 8,934.16

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Solution

The fourth proportional to 15,306.82, 21,126.36 and 8,934.16 is: 12,330.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,306.82 : 21,126.36 = 8,934.16 : x
  2. Step 2: Convert to fraction form
    15,306.82/21,126.36 = 8,934.16/x
  3. Step 3: Cross multiply
    15,306.82x = 21,126.36 × 8,934.16
  4. Step 4: Simplify right side
    15,306.82x = 188,746,280.46
  5. Step 5: Solve for x
    x = 188,746,280.46/15,306.82
  6. Step 6: Final answer
    x = 12,330.86

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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.