Home / 13,380.80-18,465.50-7,412.38

Finding the Fourth Proportional to 13,380.80, 18,465.50 and 7,412.38

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Solution

The fourth proportional to 13,380.80, 18,465.50 and 7,412.38 is: 10,229.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.80 : 18,465.50 = 7,412.38 : x
  2. Step 2: Convert to fraction form
    13,380.80/18,465.50 = 7,412.38/x
  3. Step 3: Cross multiply
    13,380.80x = 18,465.50 × 7,412.38
  4. Step 4: Simplify right side
    13,380.80x = 136,873,275.26
  5. Step 5: Solve for x
    x = 136,873,275.26/13,380.80
  6. Step 6: Final answer
    x = 10,229.08

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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.