Home / 26,147.40-39,220.92-8,618.64

Finding the Fourth Proportional to 26,147.40, 39,220.92 and 8,618.64

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Solution

The fourth proportional to 26,147.40, 39,220.92 and 8,618.64 is: 12,927.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,147.40 : 39,220.92 = 8,618.64 : x
  2. Step 2: Convert to fraction form
    26,147.40/39,220.92 = 8,618.64/x
  3. Step 3: Cross multiply
    26,147.40x = 39,220.92 × 8,618.64
  4. Step 4: Simplify right side
    26,147.40x = 338,030,989.95
  5. Step 5: Solve for x
    x = 338,030,989.95/26,147.40
  6. Step 6: Final answer
    x = 12,927.90

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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.