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Finding the Fourth Proportional to 29,288.59, 40,418.45 and 15,859.85

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Solution

The fourth proportional to 29,288.59, 40,418.45 and 15,859.85 is: 21,886.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,288.59 : 40,418.45 = 15,859.85 : x
  2. Step 2: Convert to fraction form
    29,288.59/40,418.45 = 15,859.85/x
  3. Step 3: Cross multiply
    29,288.59x = 40,418.45 × 15,859.85
  4. Step 4: Simplify right side
    29,288.59x = 641,030,272.84
  5. Step 5: Solve for x
    x = 641,030,272.84/29,288.59
  6. Step 6: Final answer
    x = 21,886.69

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.