Home / 20,706.96-28,575.48-11,275.44

Finding the Fourth Proportional to 20,706.96, 28,575.48 and 11,275.44

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Solution

The fourth proportional to 20,706.96, 28,575.48 and 11,275.44 is: 15,560.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.96 : 28,575.48 = 11,275.44 : x
  2. Step 2: Convert to fraction form
    20,706.96/28,575.48 = 11,275.44/x
  3. Step 3: Cross multiply
    20,706.96x = 28,575.48 × 11,275.44
  4. Step 4: Simplify right side
    20,706.96x = 322,201,110.21
  5. Step 5: Solve for x
    x = 322,201,110.21/20,706.96
  6. Step 6: Final answer
    x = 15,560.04

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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.