Home / 21,956.28-30,306.48-12,531.12

Finding the Fourth Proportional to 21,956.28, 30,306.48 and 12,531.12

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Solution

The fourth proportional to 21,956.28, 30,306.48 and 12,531.12 is: 17,296.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,956.28 : 30,306.48 = 12,531.12 : x
  2. Step 2: Convert to fraction form
    21,956.28/30,306.48 = 12,531.12/x
  3. Step 3: Cross multiply
    21,956.28x = 30,306.48 × 12,531.12
  4. Step 4: Simplify right side
    21,956.28x = 379,774,137.66
  5. Step 5: Solve for x
    x = 379,774,137.66/21,956.28
  6. Step 6: Final answer
    x = 17,296.83

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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.