Home / 20,835.28-28,753.48-11,884.24

Finding the Fourth Proportional to 20,835.28, 28,753.48 and 11,884.24

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Solution

The fourth proportional to 20,835.28, 28,753.48 and 11,884.24 is: 16,400.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.28 : 28,753.48 = 11,884.24 : x
  2. Step 2: Convert to fraction form
    20,835.28/28,753.48 = 11,884.24/x
  3. Step 3: Cross multiply
    20,835.28x = 28,753.48 × 11,884.24
  4. Step 4: Simplify right side
    20,835.28x = 341,713,257.16
  5. Step 5: Solve for x
    x = 341,713,257.16/20,835.28
  6. Step 6: Final answer
    x = 16,400.70

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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.