Home / 20,077.14-27,729.70-13,351.10

Finding the Fourth Proportional to 20,077.14, 27,729.70 and 13,351.10

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Solution

The fourth proportional to 20,077.14, 27,729.70 and 13,351.10 is: 18,439.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,077.14 : 27,729.70 = 13,351.10 : x
  2. Step 2: Convert to fraction form
    20,077.14/27,729.70 = 13,351.10/x
  3. Step 3: Cross multiply
    20,077.14x = 27,729.70 × 13,351.10
  4. Step 4: Simplify right side
    20,077.14x = 370,221,997.67
  5. Step 5: Solve for x
    x = 370,221,997.67/20,077.14
  6. Step 6: Final answer
    x = 18,439.98

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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.