Home / 18,240.40-27,382.20-18,110.80

Finding the Fourth Proportional to 18,240.40, 27,382.20 and 18,110.80

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Solution

The fourth proportional to 18,240.40, 27,382.20 and 18,110.80 is: 27,187.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,240.40 : 27,382.20 = 18,110.80 : x
  2. Step 2: Convert to fraction form
    18,240.40/27,382.20 = 18,110.80/x
  3. Step 3: Cross multiply
    18,240.40x = 27,382.20 × 18,110.80
  4. Step 4: Simplify right side
    18,240.40x = 495,913,547.76
  5. Step 5: Solve for x
    x = 495,913,547.76/18,240.40
  6. Step 6: Final answer
    x = 27,187.65

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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.