Home / 13,158.97-18,158.61-7,190.69

Finding the Fourth Proportional to 13,158.97, 18,158.61 and 7,190.69

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Solution

The fourth proportional to 13,158.97, 18,158.61 and 7,190.69 is: 9,922.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,158.97 : 18,158.61 = 7,190.69 : x
  2. Step 2: Convert to fraction form
    13,158.97/18,158.61 = 7,190.69/x
  3. Step 3: Cross multiply
    13,158.97x = 18,158.61 × 7,190.69
  4. Step 4: Simplify right side
    13,158.97x = 130,572,844.55
  5. Step 5: Solve for x
    x = 130,572,844.55/13,158.97
  6. Step 6: Final answer
    x = 9,922.73

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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.