Home / 20,734.42-28,613.28-11,302.78

Finding the Fourth Proportional to 20,734.42, 28,613.28 and 11,302.78

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Solution

The fourth proportional to 20,734.42, 28,613.28 and 11,302.78 is: 15,597.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.42 : 28,613.28 = 11,302.78 : x
  2. Step 2: Convert to fraction form
    20,734.42/28,613.28 = 11,302.78/x
  3. Step 3: Cross multiply
    20,734.42x = 28,613.28 × 11,302.78
  4. Step 4: Simplify right side
    20,734.42x = 323,409,608.92
  5. Step 5: Solve for x
    x = 323,409,608.92/20,734.42
  6. Step 6: Final answer
    x = 15,597.72

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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.