Home / 21,073.36-29,087.44-13,111.60

Finding the Fourth Proportional to 21,073.36, 29,087.44 and 13,111.60

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Solution

The fourth proportional to 21,073.36, 29,087.44 and 13,111.60 is: 18,097.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,073.36 : 29,087.44 = 13,111.60 : x
  2. Step 2: Convert to fraction form
    21,073.36/29,087.44 = 13,111.60/x
  3. Step 3: Cross multiply
    21,073.36x = 29,087.44 × 13,111.60
  4. Step 4: Simplify right side
    21,073.36x = 381,382,878.30
  5. Step 5: Solve for x
    x = 381,382,878.30/21,073.36
  6. Step 6: Final answer
    x = 18,097.87

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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.