Home / 13,449.19-18,560.33-7,399.68

Finding the Fourth Proportional to 13,449.19, 18,560.33 and 7,399.68

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Solution

The fourth proportional to 13,449.19, 18,560.33 and 7,399.68 is: 10,211.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.19 : 18,560.33 = 7,399.68 : x
  2. Step 2: Convert to fraction form
    13,449.19/18,560.33 = 7,399.68/x
  3. Step 3: Cross multiply
    13,449.19x = 18,560.33 × 7,399.68
  4. Step 4: Simplify right side
    13,449.19x = 137,340,502.69
  5. Step 5: Solve for x
    x = 137,340,502.69/13,449.19
  6. Step 6: Final answer
    x = 10,211.80

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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.