Home / 13,114.05-18,097.50-7,145.75

Finding the Fourth Proportional to 13,114.05, 18,097.50 and 7,145.75

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Solution

The fourth proportional to 13,114.05, 18,097.50 and 7,145.75 is: 9,861.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,114.05 : 18,097.50 = 7,145.75 : x
  2. Step 2: Convert to fraction form
    13,114.05/18,097.50 = 7,145.75/x
  3. Step 3: Cross multiply
    13,114.05x = 18,097.50 × 7,145.75
  4. Step 4: Simplify right side
    13,114.05x = 129,320,120.14
  5. Step 5: Solve for x
    x = 129,320,120.14/13,114.05
  6. Step 6: Final answer
    x = 9,861.19

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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.