Home / 18,422.73-27,612.69-10,530.78

Finding the Fourth Proportional to 18,422.73, 27,612.69 and 10,530.78

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Solution

The fourth proportional to 18,422.73, 27,612.69 and 10,530.78 is: 15,783.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,422.73 : 27,612.69 = 10,530.78 : x
  2. Step 2: Convert to fraction form
    18,422.73/27,612.69 = 10,530.78/x
  3. Step 3: Cross multiply
    18,422.73x = 27,612.69 × 10,530.78
  4. Step 4: Simplify right side
    18,422.73x = 290,783,163.60
  5. Step 5: Solve for x
    x = 290,783,163.60/18,422.73
  6. Step 6: Final answer
    x = 15,783.93

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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.