Home / 20,474.41-28,255.13-11,521.92

Finding the Fourth Proportional to 20,474.41, 28,255.13 and 11,521.92

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Solution

The fourth proportional to 20,474.41, 28,255.13 and 11,521.92 is: 15,900.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,474.41 : 28,255.13 = 11,521.92 : x
  2. Step 2: Convert to fraction form
    20,474.41/28,255.13 = 11,521.92/x
  3. Step 3: Cross multiply
    20,474.41x = 28,255.13 × 11,521.92
  4. Step 4: Simplify right side
    20,474.41x = 325,553,347.45
  5. Step 5: Solve for x
    x = 325,553,347.45/20,474.41
  6. Step 6: Final answer
    x = 15,900.50

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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.