Home / 26,280.82-39,421.20-7,812.82

Finding the Fourth Proportional to 26,280.82, 39,421.20 and 7,812.82

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Solution

The fourth proportional to 26,280.82, 39,421.20 and 7,812.82 is: 11,719.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,280.82 : 39,421.20 = 7,812.82 : x
  2. Step 2: Convert to fraction form
    26,280.82/39,421.20 = 7,812.82/x
  3. Step 3: Cross multiply
    26,280.82x = 39,421.20 × 7,812.82
  4. Step 4: Simplify right side
    26,280.82x = 307,990,739.78
  5. Step 5: Solve for x
    x = 307,990,739.78/26,280.82
  6. Step 6: Final answer
    x = 11,719.22

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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.