Home / 20,706.53-28,575.33-11,275.08

Finding the Fourth Proportional to 20,706.53, 28,575.33 and 11,275.08

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Solution

The fourth proportional to 20,706.53, 28,575.33 and 11,275.08 is: 15,559.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.53 : 28,575.33 = 11,275.08 : x
  2. Step 2: Convert to fraction form
    20,706.53/28,575.33 = 11,275.08/x
  3. Step 3: Cross multiply
    20,706.53x = 28,575.33 × 11,275.08
  4. Step 4: Simplify right side
    20,706.53x = 322,189,131.78
  5. Step 5: Solve for x
    x = 322,189,131.78/20,706.53
  6. Step 6: Final answer
    x = 15,559.79

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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.