Home / 20,913.92-28,861.28-11,482.24

Finding the Fourth Proportional to 20,913.92, 28,861.28 and 11,482.24

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Solution

The fourth proportional to 20,913.92, 28,861.28 and 11,482.24 is: 15,845.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913.92 : 28,861.28 = 11,482.24 : x
  2. Step 2: Convert to fraction form
    20,913.92/28,861.28 = 11,482.24/x
  3. Step 3: Cross multiply
    20,913.92x = 28,861.28 × 11,482.24
  4. Step 4: Simplify right side
    20,913.92x = 331,392,143.67
  5. Step 5: Solve for x
    x = 331,392,143.67/20,913.92
  6. Step 6: Final answer
    x = 15,845.53

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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.