Home / 20,675.72-28,532.10-11,244.20

Finding the Fourth Proportional to 20,675.72, 28,532.10 and 11,244.20

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Solution

The fourth proportional to 20,675.72, 28,532.10 and 11,244.20 is: 15,516.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.72 : 28,532.10 = 11,244.20 : x
  2. Step 2: Convert to fraction form
    20,675.72/28,532.10 = 11,244.20/x
  3. Step 3: Cross multiply
    20,675.72x = 28,532.10 × 11,244.20
  4. Step 4: Simplify right side
    20,675.72x = 320,820,638.82
  5. Step 5: Solve for x
    x = 320,820,638.82/20,675.72
  6. Step 6: Final answer
    x = 15,516.78

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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.