Home / 20,488.36-30,708.24-8,776.84

Finding the Fourth Proportional to 20,488.36, 30,708.24 and 8,776.84

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Solution

The fourth proportional to 20,488.36, 30,708.24 and 8,776.84 is: 13,154.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488.36 : 30,708.24 = 8,776.84 : x
  2. Step 2: Convert to fraction form
    20,488.36/30,708.24 = 8,776.84/x
  3. Step 3: Cross multiply
    20,488.36x = 30,708.24 × 8,776.84
  4. Step 4: Simplify right side
    20,488.36x = 269,521,309.16
  5. Step 5: Solve for x
    x = 269,521,309.16/20,488.36
  6. Step 6: Final answer
    x = 13,154.85

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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.