Home / 20,934.16-28,888.56-11,502.72

Finding the Fourth Proportional to 20,934.16, 28,888.56 and 11,502.72

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Solution

The fourth proportional to 20,934.16, 28,888.56 and 11,502.72 is: 15,873.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.16 : 28,888.56 = 11,502.72 : x
  2. Step 2: Convert to fraction form
    20,934.16/28,888.56 = 11,502.72/x
  3. Step 3: Cross multiply
    20,934.16x = 28,888.56 × 11,502.72
  4. Step 4: Simplify right side
    20,934.16x = 332,297,016.88
  5. Step 5: Solve for x
    x = 332,297,016.88/20,934.16
  6. Step 6: Final answer
    x = 15,873.43

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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.