Home / 15,815.11-21,843.24-10,500.70

Finding the Fourth Proportional to 15,815.11, 21,843.24 and 10,500.70

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Solution

The fourth proportional to 15,815.11, 21,843.24 and 10,500.70 is: 14,503.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.11 : 21,843.24 = 10,500.70 : x
  2. Step 2: Convert to fraction form
    15,815.11/21,843.24 = 10,500.70/x
  3. Step 3: Cross multiply
    15,815.11x = 21,843.24 × 10,500.70
  4. Step 4: Simplify right side
    15,815.11x = 229,369,310.27
  5. Step 5: Solve for x
    x = 229,369,310.27/15,815.11
  6. Step 6: Final answer
    x = 14,503.18

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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.