Home / 20,488.40-30,738.12-7,344.52

Finding the Fourth Proportional to 20,488.40, 30,738.12 and 7,344.52

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Solution

The fourth proportional to 20,488.40, 30,738.12 and 7,344.52 is: 11,018.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488.40 : 30,738.12 = 7,344.52 : x
  2. Step 2: Convert to fraction form
    20,488.40/30,738.12 = 7,344.52/x
  3. Step 3: Cross multiply
    20,488.40x = 30,738.12 × 7,344.52
  4. Step 4: Simplify right side
    20,488.40x = 225,756,737.10
  5. Step 5: Solve for x
    x = 225,756,737.10/20,488.40
  6. Step 6: Final answer
    x = 11,018.76

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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.