Home / 21,072.02-29,067.08-13,116.81

Finding the Fourth Proportional to 21,072.02, 29,067.08 and 13,116.81

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Solution

The fourth proportional to 21,072.02, 29,067.08 and 13,116.81 is: 18,093.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.02 : 29,067.08 = 13,116.81 : x
  2. Step 2: Convert to fraction form
    21,072.02/29,067.08 = 13,116.81/x
  3. Step 3: Cross multiply
    21,072.02x = 29,067.08 × 13,116.81
  4. Step 4: Simplify right side
    21,072.02x = 381,267,364.17
  5. Step 5: Solve for x
    x = 381,267,364.17/21,072.02
  6. Step 6: Final answer
    x = 18,093.53

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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.