Home / 20,031.53-30,065.45-10,679.39

Finding the Fourth Proportional to 20,031.53, 30,065.45 and 10,679.39

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Solution

The fourth proportional to 20,031.53, 30,065.45 and 10,679.39 is: 16,028.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.53 : 30,065.45 = 10,679.39 : x
  2. Step 2: Convert to fraction form
    20,031.53/30,065.45 = 10,679.39/x
  3. Step 3: Cross multiply
    20,031.53x = 30,065.45 × 10,679.39
  4. Step 4: Simplify right side
    20,031.53x = 321,080,612.68
  5. Step 5: Solve for x
    x = 321,080,612.68/20,031.53
  6. Step 6: Final answer
    x = 16,028.76

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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.