Home / 20,608.90-28,452.47-13,061.66

Finding the Fourth Proportional to 20,608.90, 28,452.47 and 13,061.66

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Solution

The fourth proportional to 20,608.90, 28,452.47 and 13,061.66 is: 18,032.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,608.90 : 28,452.47 = 13,061.66 : x
  2. Step 2: Convert to fraction form
    20,608.90/28,452.47 = 13,061.66/x
  3. Step 3: Cross multiply
    20,608.90x = 28,452.47 × 13,061.66
  4. Step 4: Simplify right side
    20,608.90x = 371,636,281.73
  5. Step 5: Solve for x
    x = 371,636,281.73/20,608.90
  6. Step 6: Final answer
    x = 18,032.81

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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.