Home / 26,440.20-39,662.10-7,720.20

Finding the Fourth Proportional to 26,440.20, 39,662.10 and 7,720.20

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Solution

The fourth proportional to 26,440.20, 39,662.10 and 7,720.20 is: 11,580.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,440.20 : 39,662.10 = 7,720.20 : x
  2. Step 2: Convert to fraction form
    26,440.20/39,662.10 = 7,720.20/x
  3. Step 3: Cross multiply
    26,440.20x = 39,662.10 × 7,720.20
  4. Step 4: Simplify right side
    26,440.20x = 306,199,344.42
  5. Step 5: Solve for x
    x = 306,199,344.42/26,440.20
  6. Step 6: Final answer
    x = 11,580.83

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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.