Home / 12,571.27-18,859.50-3,686.89

Finding the Fourth Proportional to 12,571.27, 18,859.50 and 3,686.89

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Solution

The fourth proportional to 12,571.27, 18,859.50 and 3,686.89 is: 5,531.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,571.27 : 18,859.50 = 3,686.89 : x
  2. Step 2: Convert to fraction form
    12,571.27/18,859.50 = 3,686.89/x
  3. Step 3: Cross multiply
    12,571.27x = 18,859.50 × 3,686.89
  4. Step 4: Simplify right side
    12,571.27x = 69,532,901.96
  5. Step 5: Solve for x
    x = 69,532,901.96/12,571.27
  6. Step 6: Final answer
    x = 5,531.10

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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.