Home / 12,318.75-18,482.71-7,391.92

Finding the Fourth Proportional to 12,318.75, 18,482.71 and 7,391.92

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Solution

The fourth proportional to 12,318.75, 18,482.71 and 7,391.92 is: 11,090.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.75 : 18,482.71 = 7,391.92 : x
  2. Step 2: Convert to fraction form
    12,318.75/18,482.71 = 7,391.92/x
  3. Step 3: Cross multiply
    12,318.75x = 18,482.71 × 7,391.92
  4. Step 4: Simplify right side
    12,318.75x = 136,622,713.70
  5. Step 5: Solve for x
    x = 136,622,713.70/12,318.75
  6. Step 6: Final answer
    x = 11,090.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.