Home / 21,014.74-29,013.85-13,067.78

Finding the Fourth Proportional to 21,014.74, 29,013.85 and 13,067.78

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Solution

The fourth proportional to 21,014.74, 29,013.85 and 13,067.78 is: 18,041.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014.74 : 29,013.85 = 13,067.78 : x
  2. Step 2: Convert to fraction form
    21,014.74/29,013.85 = 13,067.78/x
  3. Step 3: Cross multiply
    21,014.74x = 29,013.85 × 13,067.78
  4. Step 4: Simplify right side
    21,014.74x = 379,146,608.75
  5. Step 5: Solve for x
    x = 379,146,608.75/21,014.74
  6. Step 6: Final answer
    x = 18,041.94

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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.