Home / 12,280.86-18,421.92-3,517.07

Finding the Fourth Proportional to 12,280.86, 18,421.92 and 3,517.07

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Solution

The fourth proportional to 12,280.86, 18,421.92 and 3,517.07 is: 5,275.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.86 : 18,421.92 = 3,517.07 : x
  2. Step 2: Convert to fraction form
    12,280.86/18,421.92 = 3,517.07/x
  3. Step 3: Cross multiply
    12,280.86x = 18,421.92 × 3,517.07
  4. Step 4: Simplify right side
    12,280.86x = 64,791,090.06
  5. Step 5: Solve for x
    x = 64,791,090.06/12,280.86
  6. Step 6: Final answer
    x = 5,275.78

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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.