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Finding the Fourth Proportional to 16,854.69, 25,282.05 and 15,815.87

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Solution

The fourth proportional to 16,854.69, 25,282.05 and 15,815.87 is: 23,723.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,854.69 : 25,282.05 = 15,815.87 : x
  2. Step 2: Convert to fraction form
    16,854.69/25,282.05 = 15,815.87/x
  3. Step 3: Cross multiply
    16,854.69x = 25,282.05 × 15,815.87
  4. Step 4: Simplify right side
    16,854.69x = 399,857,525.22
  5. Step 5: Solve for x
    x = 399,857,525.22/16,854.69
  6. Step 6: Final answer
    x = 23,723.81

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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.