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Finding the Fourth Proportional to 26,004.80, 38,920.80 and 18,228.80

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Solution

The fourth proportional to 26,004.80, 38,920.80 and 18,228.80 is: 27,282.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,004.80 : 38,920.80 = 18,228.80 : x
  2. Step 2: Convert to fraction form
    26,004.80/38,920.80 = 18,228.80/x
  3. Step 3: Cross multiply
    26,004.80x = 38,920.80 × 18,228.80
  4. Step 4: Simplify right side
    26,004.80x = 709,479,479.04
  5. Step 5: Solve for x
    x = 709,479,479.04/26,004.80
  6. Step 6: Final answer
    x = 27,282.64

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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.