Home / 16,511.45-22,789.88-10,139.57

Finding the Fourth Proportional to 16,511.45, 22,789.88 and 10,139.57

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Solution

The fourth proportional to 16,511.45, 22,789.88 and 10,139.57 is: 13,995.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,511.45 : 22,789.88 = 10,139.57 : x
  2. Step 2: Convert to fraction form
    16,511.45/22,789.88 = 10,139.57/x
  3. Step 3: Cross multiply
    16,511.45x = 22,789.88 × 10,139.57
  4. Step 4: Simplify right side
    16,511.45x = 231,079,418.90
  5. Step 5: Solve for x
    x = 231,079,418.90/16,511.45
  6. Step 6: Final answer
    x = 13,995.11

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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.