Home / 13,382.38-18,466.19-7,412.55

Finding the Fourth Proportional to 13,382.38, 18,466.19 and 7,412.55

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Solution

The fourth proportional to 13,382.38, 18,466.19 and 7,412.55 is: 10,228.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,382.38 : 18,466.19 = 7,412.55 : x
  2. Step 2: Convert to fraction form
    13,382.38/18,466.19 = 7,412.55/x
  3. Step 3: Cross multiply
    13,382.38x = 18,466.19 × 7,412.55
  4. Step 4: Simplify right side
    13,382.38x = 136,881,556.68
  5. Step 5: Solve for x
    x = 136,881,556.68/13,382.38
  6. Step 6: Final answer
    x = 10,228.49

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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.