Home / 20,711.88-28,583.28-11,637.72

Finding the Fourth Proportional to 20,711.88, 28,583.28 and 11,637.72

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Solution

The fourth proportional to 20,711.88, 28,583.28 and 11,637.72 is: 16,060.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.88 : 28,583.28 = 11,637.72 : x
  2. Step 2: Convert to fraction form
    20,711.88/28,583.28 = 11,637.72/x
  3. Step 3: Cross multiply
    20,711.88x = 28,583.28 × 11,637.72
  4. Step 4: Simplify right side
    20,711.88x = 332,644,209.32
  5. Step 5: Solve for x
    x = 332,644,209.32/20,711.88
  6. Step 6: Final answer
    x = 16,060.55

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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.