Home / 21,331.64-31,983.75-8,860.26

Finding the Fourth Proportional to 21,331.64, 31,983.75 and 8,860.26

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Solution

The fourth proportional to 21,331.64, 31,983.75 and 8,860.26 is: 13,284.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.64 : 31,983.75 = 8,860.26 : x
  2. Step 2: Convert to fraction form
    21,331.64/31,983.75 = 8,860.26/x
  3. Step 3: Cross multiply
    21,331.64x = 31,983.75 × 8,860.26
  4. Step 4: Simplify right side
    21,331.64x = 283,384,340.78
  5. Step 5: Solve for x
    x = 283,384,340.78/21,331.64
  6. Step 6: Final answer
    x = 13,284.70

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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.