Home / 13,318.95-18,380.25-7,350.51

Finding the Fourth Proportional to 13,318.95, 18,380.25 and 7,350.51

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Solution

The fourth proportional to 13,318.95, 18,380.25 and 7,350.51 is: 10,143.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.95 : 18,380.25 = 7,350.51 : x
  2. Step 2: Convert to fraction form
    13,318.95/18,380.25 = 7,350.51/x
  3. Step 3: Cross multiply
    13,318.95x = 18,380.25 × 7,350.51
  4. Step 4: Simplify right side
    13,318.95x = 135,104,211.43
  5. Step 5: Solve for x
    x = 135,104,211.43/13,318.95
  6. Step 6: Final answer
    x = 10,143.76

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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.