Home / 20,706.26-28,575.15-11,275.34

Finding the Fourth Proportional to 20,706.26, 28,575.15 and 11,275.34

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Solution

The fourth proportional to 20,706.26, 28,575.15 and 11,275.34 is: 15,560.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.26 : 28,575.15 = 11,275.34 : x
  2. Step 2: Convert to fraction form
    20,706.26/28,575.15 = 11,275.34/x
  3. Step 3: Cross multiply
    20,706.26x = 28,575.15 × 11,275.34
  4. Step 4: Simplify right side
    20,706.26x = 322,194,531.80
  5. Step 5: Solve for x
    x = 322,194,531.80/20,706.26
  6. Step 6: Final answer
    x = 15,560.25

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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.