Home / 20,675.61-28,532.43-11,244.15

Finding the Fourth Proportional to 20,675.61, 28,532.43 and 11,244.15

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Solution

The fourth proportional to 20,675.61, 28,532.43 and 11,244.15 is: 15,516.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.61 : 28,532.43 = 11,244.15 : x
  2. Step 2: Convert to fraction form
    20,675.61/28,532.43 = 11,244.15/x
  3. Step 3: Cross multiply
    20,675.61x = 28,532.43 × 11,244.15
  4. Step 4: Simplify right side
    20,675.61x = 320,822,922.78
  5. Step 5: Solve for x
    x = 320,822,922.78/20,675.61
  6. Step 6: Final answer
    x = 15,516.97

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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.