Home / 20,073.14-27,701.15-11,120.78

Finding the Fourth Proportional to 20,073.14, 27,701.15 and 11,120.78

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Solution

The fourth proportional to 20,073.14, 27,701.15 and 11,120.78 is: 15,346.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,073.14 : 27,701.15 = 11,120.78 : x
  2. Step 2: Convert to fraction form
    20,073.14/27,701.15 = 11,120.78/x
  3. Step 3: Cross multiply
    20,073.14x = 27,701.15 × 11,120.78
  4. Step 4: Simplify right side
    20,073.14x = 308,058,394.90
  5. Step 5: Solve for x
    x = 308,058,394.90/20,073.14
  6. Step 6: Final answer
    x = 15,346.80

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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.