Home / 20,706.72-28,575.72-11,275.26

Finding the Fourth Proportional to 20,706.72, 28,575.72 and 11,275.26

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Solution

The fourth proportional to 20,706.72, 28,575.72 and 11,275.26 is: 15,560.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.72 : 28,575.72 = 11,275.26 : x
  2. Step 2: Convert to fraction form
    20,706.72/28,575.72 = 11,275.26/x
  3. Step 3: Cross multiply
    20,706.72x = 28,575.72 × 11,275.26
  4. Step 4: Simplify right side
    20,706.72x = 322,198,672.69
  5. Step 5: Solve for x
    x = 322,198,672.69/20,706.72
  6. Step 6: Final answer
    x = 15,560.10

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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.