Home / 22,551.10-31,119.75-12,479.97

Finding the Fourth Proportional to 22,551.10, 31,119.75 and 12,479.97

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Solution

The fourth proportional to 22,551.10, 31,119.75 and 12,479.97 is: 17,221.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,551.10 : 31,119.75 = 12,479.97 : x
  2. Step 2: Convert to fraction form
    22,551.10/31,119.75 = 12,479.97/x
  3. Step 3: Cross multiply
    22,551.10x = 31,119.75 × 12,479.97
  4. Step 4: Simplify right side
    22,551.10x = 388,373,390.81
  5. Step 5: Solve for x
    x = 388,373,390.81/22,551.10
  6. Step 6: Final answer
    x = 17,221.93

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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.