Home / 21,224.66-31,836.95-5,642.28

Finding the Fourth Proportional to 21,224.66, 31,836.95 and 5,642.28

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Solution

The fourth proportional to 21,224.66, 31,836.95 and 5,642.28 is: 8,463.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,224.66 : 31,836.95 = 5,642.28 : x
  2. Step 2: Convert to fraction form
    21,224.66/31,836.95 = 5,642.28/x
  3. Step 3: Cross multiply
    21,224.66x = 31,836.95 × 5,642.28
  4. Step 4: Simplify right side
    21,224.66x = 179,633,000.35
  5. Step 5: Solve for x
    x = 179,633,000.35/21,224.66
  6. Step 6: Final answer
    x = 8,463.41

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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.