Home / 20,774.60-31,161.95-8,295.64

Finding the Fourth Proportional to 20,774.60, 31,161.95 and 8,295.64

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Solution

The fourth proportional to 20,774.60, 31,161.95 and 8,295.64 is: 12,443.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.60 : 31,161.95 = 8,295.64 : x
  2. Step 2: Convert to fraction form
    20,774.60/31,161.95 = 8,295.64/x
  3. Step 3: Cross multiply
    20,774.60x = 31,161.95 × 8,295.64
  4. Step 4: Simplify right side
    20,774.60x = 258,508,318.90
  5. Step 5: Solve for x
    x = 258,508,318.90/20,774.60
  6. Step 6: Final answer
    x = 12,443.48

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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.