Home / 15,961.66-21,990.39-12,603.23

Finding the Fourth Proportional to 15,961.66, 21,990.39 and 12,603.23

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Solution

The fourth proportional to 15,961.66, 21,990.39 and 12,603.23 is: 17,363.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,961.66 : 21,990.39 = 12,603.23 : x
  2. Step 2: Convert to fraction form
    15,961.66/21,990.39 = 12,603.23/x
  3. Step 3: Cross multiply
    15,961.66x = 21,990.39 × 12,603.23
  4. Step 4: Simplify right side
    15,961.66x = 277,149,868.21
  5. Step 5: Solve for x
    x = 277,149,868.21/15,961.66
  6. Step 6: Final answer
    x = 17,363.48

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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.