Home / 27,812.90-38,387.85-18,382.34

Finding the Fourth Proportional to 27,812.90, 38,387.85 and 18,382.34

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Solution

The fourth proportional to 27,812.90, 38,387.85 and 18,382.34 is: 25,371.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,812.90 : 38,387.85 = 18,382.34 : x
  2. Step 2: Convert to fraction form
    27,812.90/38,387.85 = 18,382.34/x
  3. Step 3: Cross multiply
    27,812.90x = 38,387.85 × 18,382.34
  4. Step 4: Simplify right side
    27,812.90x = 705,658,510.57
  5. Step 5: Solve for x
    x = 705,658,510.57/27,812.90
  6. Step 6: Final answer
    x = 25,371.63

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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.