Home / 20,713.29-28,601.20-16,885.53

Finding the Fourth Proportional to 20,713.29, 28,601.20 and 16,885.53

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Solution

The fourth proportional to 20,713.29, 28,601.20 and 16,885.53 is: 23,315.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.29 : 28,601.20 = 16,885.53 : x
  2. Step 2: Convert to fraction form
    20,713.29/28,601.20 = 16,885.53/x
  3. Step 3: Cross multiply
    20,713.29x = 28,601.20 × 16,885.53
  4. Step 4: Simplify right side
    20,713.29x = 482,946,441.74
  5. Step 5: Solve for x
    x = 482,946,441.74/20,713.29
  6. Step 6: Final answer
    x = 23,315.78

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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.