Home / 21,309.44-31,964.18-11,511.02

Finding the Fourth Proportional to 21,309.44, 31,964.18 and 11,511.02

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Solution

The fourth proportional to 21,309.44, 31,964.18 and 11,511.02 is: 17,266.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.44 : 31,964.18 = 11,511.02 : x
  2. Step 2: Convert to fraction form
    21,309.44/31,964.18 = 11,511.02/x
  3. Step 3: Cross multiply
    21,309.44x = 31,964.18 × 11,511.02
  4. Step 4: Simplify right side
    21,309.44x = 367,940,097.89
  5. Step 5: Solve for x
    x = 367,940,097.89/21,309.44
  6. Step 6: Final answer
    x = 17,266.53

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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.