Home / 20,474.28-28,254.24-11,521.80

Finding the Fourth Proportional to 20,474.28, 28,254.24 and 11,521.80

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Solution

The fourth proportional to 20,474.28, 28,254.24 and 11,521.80 is: 15,899.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,474.28 : 28,254.24 = 11,521.80 : x
  2. Step 2: Convert to fraction form
    20,474.28/28,254.24 = 11,521.80/x
  3. Step 3: Cross multiply
    20,474.28x = 28,254.24 × 11,521.80
  4. Step 4: Simplify right side
    20,474.28x = 325,539,702.43
  5. Step 5: Solve for x
    x = 325,539,702.43/20,474.28
  6. Step 6: Final answer
    x = 15,899.93

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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.