Home / 12,218.50-16,862.28-7,441.78

Finding the Fourth Proportional to 12,218.50, 16,862.28 and 7,441.78

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Solution

The fourth proportional to 12,218.50, 16,862.28 and 7,441.78 is: 10,270.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.50 : 16,862.28 = 7,441.78 : x
  2. Step 2: Convert to fraction form
    12,218.50/16,862.28 = 7,441.78/x
  3. Step 3: Cross multiply
    12,218.50x = 16,862.28 × 7,441.78
  4. Step 4: Simplify right side
    12,218.50x = 125,485,378.06
  5. Step 5: Solve for x
    x = 125,485,378.06/12,218.50
  6. Step 6: Final answer
    x = 10,270.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.