Home / 18,351.72-27,280.13-17,812.94

Finding the Fourth Proportional to 18,351.72, 27,280.13 and 17,812.94

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Solution

The fourth proportional to 18,351.72, 27,280.13 and 17,812.94 is: 26,479.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,351.72 : 27,280.13 = 17,812.94 : x
  2. Step 2: Convert to fraction form
    18,351.72/27,280.13 = 17,812.94/x
  3. Step 3: Cross multiply
    18,351.72x = 27,280.13 × 17,812.94
  4. Step 4: Simplify right side
    18,351.72x = 485,939,093.42
  5. Step 5: Solve for x
    x = 485,939,093.42/18,351.72
  6. Step 6: Final answer
    x = 26,479.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.