Home / 21,675.26-29,911.77-12,115.14

Finding the Fourth Proportional to 21,675.26, 29,911.77 and 12,115.14

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Solution

The fourth proportional to 21,675.26, 29,911.77 and 12,115.14 is: 16,718.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,675.26 : 29,911.77 = 12,115.14 : x
  2. Step 2: Convert to fraction form
    21,675.26/29,911.77 = 12,115.14/x
  3. Step 3: Cross multiply
    21,675.26x = 29,911.77 × 12,115.14
  4. Step 4: Simplify right side
    21,675.26x = 362,385,169.03
  5. Step 5: Solve for x
    x = 362,385,169.03/21,675.26
  6. Step 6: Final answer
    x = 16,718.84

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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.