Home / 12,211.93-18,315.90-3,447.46

Finding the Fourth Proportional to 12,211.93, 18,315.90 and 3,447.46

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Solution

The fourth proportional to 12,211.93, 18,315.90 and 3,447.46 is: 5,170.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.93 : 18,315.90 = 3,447.46 : x
  2. Step 2: Convert to fraction form
    12,211.93/18,315.90 = 3,447.46/x
  3. Step 3: Cross multiply
    12,211.93x = 18,315.90 × 3,447.46
  4. Step 4: Simplify right side
    12,211.93x = 63,143,332.61
  5. Step 5: Solve for x
    x = 63,143,332.61/12,211.93
  6. Step 6: Final answer
    x = 5,170.63

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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.