Home / 18,126.40-27,145.80-10,311.52

Finding the Fourth Proportional to 18,126.40, 27,145.80 and 10,311.52

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Solution

The fourth proportional to 18,126.40, 27,145.80 and 10,311.52 is: 15,442.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,126.40 : 27,145.80 = 10,311.52 : x
  2. Step 2: Convert to fraction form
    18,126.40/27,145.80 = 10,311.52/x
  3. Step 3: Cross multiply
    18,126.40x = 27,145.80 × 10,311.52
  4. Step 4: Simplify right side
    18,126.40x = 279,914,459.62
  5. Step 5: Solve for x
    x = 279,914,459.62/18,126.40
  6. Step 6: Final answer
    x = 15,442.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.