Home / 20,672.16-28,527.42-11,240.72

Finding the Fourth Proportional to 20,672.16, 28,527.42 and 11,240.72

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Solution

The fourth proportional to 20,672.16, 28,527.42 and 11,240.72 is: 15,512.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.16 : 28,527.42 = 11,240.72 : x
  2. Step 2: Convert to fraction form
    20,672.16/28,527.42 = 11,240.72/x
  3. Step 3: Cross multiply
    20,672.16x = 28,527.42 × 11,240.72
  4. Step 4: Simplify right side
    20,672.16x = 320,668,740.54
  5. Step 5: Solve for x
    x = 320,668,740.54/20,672.16
  6. Step 6: Final answer
    x = 15,512.11

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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.