Home / 21,296.97-31,965.12-10,774.40

Finding the Fourth Proportional to 21,296.97, 31,965.12 and 10,774.40

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Solution

The fourth proportional to 21,296.97, 31,965.12 and 10,774.40 is: 16,171.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,296.97 : 31,965.12 = 10,774.40 : x
  2. Step 2: Convert to fraction form
    21,296.97/31,965.12 = 10,774.40/x
  3. Step 3: Cross multiply
    21,296.97x = 31,965.12 × 10,774.40
  4. Step 4: Simplify right side
    21,296.97x = 344,404,829.10
  5. Step 5: Solve for x
    x = 344,404,829.10/21,296.97
  6. Step 6: Final answer
    x = 16,171.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.