Home / 13,221.06-18,243.92-7,554.69

Finding the Fourth Proportional to 13,221.06, 18,243.92 and 7,554.69

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Solution

The fourth proportional to 13,221.06, 18,243.92 and 7,554.69 is: 10,424.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.06 : 18,243.92 = 7,554.69 : x
  2. Step 2: Convert to fraction form
    13,221.06/18,243.92 = 7,554.69/x
  3. Step 3: Cross multiply
    13,221.06x = 18,243.92 × 7,554.69
  4. Step 4: Simplify right side
    13,221.06x = 137,827,122.21
  5. Step 5: Solve for x
    x = 137,827,122.21/13,221.06
  6. Step 6: Final answer
    x = 10,424.82

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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.