Home / 13,243.35-18,270.66-7,575.08

Finding the Fourth Proportional to 13,243.35, 18,270.66 and 7,575.08

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Solution

The fourth proportional to 13,243.35, 18,270.66 and 7,575.08 is: 10,450.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,243.35 : 18,270.66 = 7,575.08 : x
  2. Step 2: Convert to fraction form
    13,243.35/18,270.66 = 7,575.08/x
  3. Step 3: Cross multiply
    13,243.35x = 18,270.66 × 7,575.08
  4. Step 4: Simplify right side
    13,243.35x = 138,401,619.80
  5. Step 5: Solve for x
    x = 138,401,619.80/13,243.35
  6. Step 6: Final answer
    x = 10,450.65

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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.