Home / 13,729.12-18,946.22-7,441.49

Finding the Fourth Proportional to 13,729.12, 18,946.22 and 7,441.49

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Solution

The fourth proportional to 13,729.12, 18,946.22 and 7,441.49 is: 10,269.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,729.12 : 18,946.22 = 7,441.49 : x
  2. Step 2: Convert to fraction form
    13,729.12/18,946.22 = 7,441.49/x
  3. Step 3: Cross multiply
    13,729.12x = 18,946.22 × 7,441.49
  4. Step 4: Simplify right side
    13,729.12x = 140,988,116.83
  5. Step 5: Solve for x
    x = 140,988,116.83/13,729.12
  6. Step 6: Final answer
    x = 10,269.28

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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.