Home / 23,121.92-31,908.12-12,511.32

Finding the Fourth Proportional to 23,121.92, 31,908.12 and 12,511.32

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Solution

The fourth proportional to 23,121.92, 31,908.12 and 12,511.32 is: 17,265.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,121.92 : 31,908.12 = 12,511.32 : x
  2. Step 2: Convert to fraction form
    23,121.92/31,908.12 = 12,511.32/x
  3. Step 3: Cross multiply
    23,121.92x = 31,908.12 × 12,511.32
  4. Step 4: Simplify right side
    23,121.92x = 399,212,699.92
  5. Step 5: Solve for x
    x = 399,212,699.92/23,121.92
  6. Step 6: Final answer
    x = 17,265.55

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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.