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Finding the Fourth Proportional to 23,398.87, 32,290.51 and 12,788.68

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Solution

The fourth proportional to 23,398.87, 32,290.51 and 12,788.68 is: 17,648.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,398.87 : 32,290.51 = 12,788.68 : x
  2. Step 2: Convert to fraction form
    23,398.87/32,290.51 = 12,788.68/x
  3. Step 3: Cross multiply
    23,398.87x = 32,290.51 × 12,788.68
  4. Step 4: Simplify right side
    23,398.87x = 412,952,837.97
  5. Step 5: Solve for x
    x = 412,952,837.97/23,398.87
  6. Step 6: Final answer
    x = 17,648.41

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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.