Home / 18,701.18-28,020.86-16,771.76

Finding the Fourth Proportional to 18,701.18, 28,020.86 and 16,771.76

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Solution

The fourth proportional to 18,701.18, 28,020.86 and 16,771.76 is: 25,129.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,701.18 : 28,020.86 = 16,771.76 : x
  2. Step 2: Convert to fraction form
    18,701.18/28,020.86 = 16,771.76/x
  3. Step 3: Cross multiply
    18,701.18x = 28,020.86 × 16,771.76
  4. Step 4: Simplify right side
    18,701.18x = 469,959,138.91
  5. Step 5: Solve for x
    x = 469,959,138.91/18,701.18
  6. Step 6: Final answer
    x = 25,129.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.