Home / 18,418.16-27,604.13-7,875.78

Finding the Fourth Proportional to 18,418.16, 27,604.13 and 7,875.78

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Solution

The fourth proportional to 18,418.16, 27,604.13 and 7,875.78 is: 11,803.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,418.16 : 27,604.13 = 7,875.78 : x
  2. Step 2: Convert to fraction form
    18,418.16/27,604.13 = 7,875.78/x
  3. Step 3: Cross multiply
    18,418.16x = 27,604.13 × 7,875.78
  4. Step 4: Simplify right side
    18,418.16x = 217,404,111.65
  5. Step 5: Solve for x
    x = 217,404,111.65/18,418.16
  6. Step 6: Final answer
    x = 11,803.79

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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.