Home / 22,547.72-31,119.66-13,121.75

Finding the Fourth Proportional to 22,547.72, 31,119.66 and 13,121.75

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Solution

The fourth proportional to 22,547.72, 31,119.66 and 13,121.75 is: 18,110.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,547.72 : 31,119.66 = 13,121.75 : x
  2. Step 2: Convert to fraction form
    22,547.72/31,119.66 = 13,121.75/x
  3. Step 3: Cross multiply
    22,547.72x = 31,119.66 × 13,121.75
  4. Step 4: Simplify right side
    22,547.72x = 408,344,243.01
  5. Step 5: Solve for x
    x = 408,344,243.01/22,547.72
  6. Step 6: Final answer
    x = 18,110.23

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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.