Home / 20,778.96-31,161.12-5,983.92

Finding the Fourth Proportional to 20,778.96, 31,161.12 and 5,983.92

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Solution

The fourth proportional to 20,778.96, 31,161.12 and 5,983.92 is: 8,973.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778.96 : 31,161.12 = 5,983.92 : x
  2. Step 2: Convert to fraction form
    20,778.96/31,161.12 = 5,983.92/x
  3. Step 3: Cross multiply
    20,778.96x = 31,161.12 × 5,983.92
  4. Step 4: Simplify right side
    20,778.96x = 186,465,649.19
  5. Step 5: Solve for x
    x = 186,465,649.19/20,778.96
  6. Step 6: Final answer
    x = 8,973.77

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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.