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Finding the Fourth Proportional to 38,626.62, 53,311.41 and 21,859.62

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Solution

The fourth proportional to 38,626.62, 53,311.41 and 21,859.62 is: 30,170.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,626.62 : 53,311.41 = 21,859.62 : x
  2. Step 2: Convert to fraction form
    38,626.62/53,311.41 = 21,859.62/x
  3. Step 3: Cross multiply
    38,626.62x = 53,311.41 × 21,859.62
  4. Step 4: Simplify right side
    38,626.62x = 1,165,367,164.26
  5. Step 5: Solve for x
    x = 1,165,367,164.26/38,626.62
  6. Step 6: Final answer
    x = 30,170.05

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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.