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Finding the Fourth Proportional to 23,238.80, 34,819.80 and 19,782.80

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Solution

The fourth proportional to 23,238.80, 34,819.80 and 19,782.80 is: 29,641.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,238.80 : 34,819.80 = 19,782.80 : x
  2. Step 2: Convert to fraction form
    23,238.80/34,819.80 = 19,782.80/x
  3. Step 3: Cross multiply
    23,238.80x = 34,819.80 × 19,782.80
  4. Step 4: Simplify right side
    23,238.80x = 688,833,139.44
  5. Step 5: Solve for x
    x = 688,833,139.44/23,238.80
  6. Step 6: Final answer
    x = 29,641.51

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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.