Home / 20,701.90-28,568.17-12,089.56

Finding the Fourth Proportional to 20,701.90, 28,568.17 and 12,089.56

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Solution

The fourth proportional to 20,701.90, 28,568.17 and 12,089.56 is: 16,683.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.90 : 28,568.17 = 12,089.56 : x
  2. Step 2: Convert to fraction form
    20,701.90/28,568.17 = 12,089.56/x
  3. Step 3: Cross multiply
    20,701.90x = 28,568.17 × 12,089.56
  4. Step 4: Simplify right side
    20,701.90x = 345,376,605.31
  5. Step 5: Solve for x
    x = 345,376,605.31/20,701.90
  6. Step 6: Final answer
    x = 16,683.33

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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.