Home / 26,619.20-39,928.80-18,843.20

Finding the Fourth Proportional to 26,619.20, 39,928.80 and 18,843.20

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Solution

The fourth proportional to 26,619.20, 39,928.80 and 18,843.20 is: 28,264.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,619.20 : 39,928.80 = 18,843.20 : x
  2. Step 2: Convert to fraction form
    26,619.20/39,928.80 = 18,843.20/x
  3. Step 3: Cross multiply
    26,619.20x = 39,928.80 × 18,843.20
  4. Step 4: Simplify right side
    26,619.20x = 752,386,364.16
  5. Step 5: Solve for x
    x = 752,386,364.16/26,619.20
  6. Step 6: Final answer
    x = 28,264.80

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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.