Home / 13,147.41-18,144.90-7,327.08

Finding the Fourth Proportional to 13,147.41, 18,144.90 and 7,327.08

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Solution

The fourth proportional to 13,147.41, 18,144.90 and 7,327.08 is: 10,112.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147.41 : 18,144.90 = 7,327.08 : x
  2. Step 2: Convert to fraction form
    13,147.41/18,144.90 = 7,327.08/x
  3. Step 3: Cross multiply
    13,147.41x = 18,144.90 × 7,327.08
  4. Step 4: Simplify right side
    13,147.41x = 132,949,133.89
  5. Step 5: Solve for x
    x = 132,949,133.89/13,147.41
  6. Step 6: Final answer
    x = 10,112.19

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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.