Home / 13,165.72-18,168.66-7,500.22

Finding the Fourth Proportional to 13,165.72, 18,168.66 and 7,500.22

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Solution

The fourth proportional to 13,165.72, 18,168.66 and 7,500.22 is: 10,350.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,165.72 : 18,168.66 = 7,500.22 : x
  2. Step 2: Convert to fraction form
    13,165.72/18,168.66 = 7,500.22/x
  3. Step 3: Cross multiply
    13,165.72x = 18,168.66 × 7,500.22
  4. Step 4: Simplify right side
    13,165.72x = 136,268,947.11
  5. Step 5: Solve for x
    x = 136,268,947.11/13,165.72
  6. Step 6: Final answer
    x = 10,350.28

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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.