Home / 13,141.92-18,134.76-7,475.16

Finding the Fourth Proportional to 13,141.92, 18,134.76 and 7,475.16

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Solution

The fourth proportional to 13,141.92, 18,134.76 and 7,475.16 is: 10,315.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.92 : 18,134.76 = 7,475.16 : x
  2. Step 2: Convert to fraction form
    13,141.92/18,134.76 = 7,475.16/x
  3. Step 3: Cross multiply
    13,141.92x = 18,134.76 × 7,475.16
  4. Step 4: Simplify right side
    13,141.92x = 135,560,232.56
  5. Step 5: Solve for x
    x = 135,560,232.56/13,141.92
  6. Step 6: Final answer
    x = 10,315.10

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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.