Home / 20,956.34-28,920.04-11,524.91

Finding the Fourth Proportional to 20,956.34, 28,920.04 and 11,524.91

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Solution

The fourth proportional to 20,956.34, 28,920.04 and 11,524.91 is: 15,904.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.34 : 28,920.04 = 11,524.91 : x
  2. Step 2: Convert to fraction form
    20,956.34/28,920.04 = 11,524.91/x
  3. Step 3: Cross multiply
    20,956.34x = 28,920.04 × 11,524.91
  4. Step 4: Simplify right side
    20,956.34x = 333,300,684.78
  5. Step 5: Solve for x
    x = 333,300,684.78/20,956.34
  6. Step 6: Final answer
    x = 15,904.53

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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.