Home / 18,019.40-27,031.48-5,540.28

Finding the Fourth Proportional to 18,019.40, 27,031.48 and 5,540.28

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Solution

The fourth proportional to 18,019.40, 27,031.48 and 5,540.28 is: 8,311.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,019.40 : 27,031.48 = 5,540.28 : x
  2. Step 2: Convert to fraction form
    18,019.40/27,031.48 = 5,540.28/x
  3. Step 3: Cross multiply
    18,019.40x = 27,031.48 × 5,540.28
  4. Step 4: Simplify right side
    18,019.40x = 149,761,968.01
  5. Step 5: Solve for x
    x = 149,761,968.01/18,019.40
  6. Step 6: Final answer
    x = 8,311.15

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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.