Home / 21,146.28-29,178.16-12,067.50

Finding the Fourth Proportional to 21,146.28, 29,178.16 and 12,067.50

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Solution

The fourth proportional to 21,146.28, 29,178.16 and 12,067.50 is: 16,651.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.28 : 29,178.16 = 12,067.50 : x
  2. Step 2: Convert to fraction form
    21,146.28/29,178.16 = 12,067.50/x
  3. Step 3: Cross multiply
    21,146.28x = 29,178.16 × 12,067.50
  4. Step 4: Simplify right side
    21,146.28x = 352,107,445.80
  5. Step 5: Solve for x
    x = 352,107,445.80/21,146.28
  6. Step 6: Final answer
    x = 16,651.03

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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.