Home / 20,542.32-28,348.39-11,110.88

Finding the Fourth Proportional to 20,542.32, 28,348.39 and 11,110.88

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Solution

The fourth proportional to 20,542.32, 28,348.39 and 11,110.88 is: 15,333.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,542.32 : 28,348.39 = 11,110.88 : x
  2. Step 2: Convert to fraction form
    20,542.32/28,348.39 = 11,110.88/x
  3. Step 3: Cross multiply
    20,542.32x = 28,348.39 × 11,110.88
  4. Step 4: Simplify right side
    20,542.32x = 314,975,559.48
  5. Step 5: Solve for x
    x = 314,975,559.48/20,542.32
  6. Step 6: Final answer
    x = 15,333.01

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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.