Home / 20,706.68-28,575.08-11,275.24

Finding the Fourth Proportional to 20,706.68, 28,575.08 and 11,275.24

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Solution

The fourth proportional to 20,706.68, 28,575.08 and 11,275.24 is: 15,559.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.68 : 28,575.08 = 11,275.24 : x
  2. Step 2: Convert to fraction form
    20,706.68/28,575.08 = 11,275.24/x
  3. Step 3: Cross multiply
    20,706.68x = 28,575.08 × 11,275.24
  4. Step 4: Simplify right side
    20,706.68x = 322,190,885.02
  5. Step 5: Solve for x
    x = 322,190,885.02/20,706.68
  6. Step 6: Final answer
    x = 15,559.76

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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.