Home / 13,114.32-18,097.96-7,145.98

Finding the Fourth Proportional to 13,114.32, 18,097.96 and 7,145.98

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Solution

The fourth proportional to 13,114.32, 18,097.96 and 7,145.98 is: 9,861.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,114.32 : 18,097.96 = 7,145.98 : x
  2. Step 2: Convert to fraction form
    13,114.32/18,097.96 = 7,145.98/x
  3. Step 3: Cross multiply
    13,114.32x = 18,097.96 × 7,145.98
  4. Step 4: Simplify right side
    13,114.32x = 129,327,660.20
  5. Step 5: Solve for x
    x = 129,327,660.20/13,114.32
  6. Step 6: Final answer
    x = 9,861.56

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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.