Home / 13,398.14-18,489.60-7,429.88

Finding the Fourth Proportional to 13,398.14, 18,489.60 and 7,429.88

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Solution

The fourth proportional to 13,398.14, 18,489.60 and 7,429.88 is: 10,253.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.14 : 18,489.60 = 7,429.88 : x
  2. Step 2: Convert to fraction form
    13,398.14/18,489.60 = 7,429.88/x
  3. Step 3: Cross multiply
    13,398.14x = 18,489.60 × 7,429.88
  4. Step 4: Simplify right side
    13,398.14x = 137,375,509.25
  5. Step 5: Solve for x
    x = 137,375,509.25/13,398.14
  6. Step 6: Final answer
    x = 10,253.33

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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.