Home / 13,399.68-18,488.92-7,431.04

Finding the Fourth Proportional to 13,399.68, 18,488.92 and 7,431.04

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Solution

The fourth proportional to 13,399.68, 18,488.92 and 7,431.04 is: 10,253.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399.68 : 18,488.92 = 7,431.04 : x
  2. Step 2: Convert to fraction form
    13,399.68/18,488.92 = 7,431.04/x
  3. Step 3: Cross multiply
    13,399.68x = 18,488.92 × 7,431.04
  4. Step 4: Simplify right side
    13,399.68x = 137,391,904.08
  5. Step 5: Solve for x
    x = 137,391,904.08/13,399.68
  6. Step 6: Final answer
    x = 10,253.37

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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.