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Finding the Fourth Proportional to 29,296.50, 40,429.34 and 15,867.80

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Solution

The fourth proportional to 29,296.50, 40,429.34 and 15,867.80 is: 21,897.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,296.50 : 40,429.34 = 15,867.80 : x
  2. Step 2: Convert to fraction form
    29,296.50/40,429.34 = 15,867.80/x
  3. Step 3: Cross multiply
    29,296.50x = 40,429.34 × 15,867.80
  4. Step 4: Simplify right side
    29,296.50x = 641,524,399.77
  5. Step 5: Solve for x
    x = 641,524,399.77/29,296.50
  6. Step 6: Final answer
    x = 21,897.65

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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.