Home / 21,523.39-29,702.10-12,091.75

Finding the Fourth Proportional to 21,523.39, 29,702.10 and 12,091.75

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Solution

The fourth proportional to 21,523.39, 29,702.10 and 12,091.75 is: 16,686.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,523.39 : 29,702.10 = 12,091.75 : x
  2. Step 2: Convert to fraction form
    21,523.39/29,702.10 = 12,091.75/x
  3. Step 3: Cross multiply
    21,523.39x = 29,702.10 × 12,091.75
  4. Step 4: Simplify right side
    21,523.39x = 359,150,367.68
  5. Step 5: Solve for x
    x = 359,150,367.68/21,523.39
  6. Step 6: Final answer
    x = 16,686.51

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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.