Home / 21,204.72-31,803.84-5,622.21

Finding the Fourth Proportional to 21,204.72, 31,803.84 and 5,622.21

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Solution

The fourth proportional to 21,204.72, 31,803.84 and 5,622.21 is: 8,432.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.72 : 31,803.84 = 5,622.21 : x
  2. Step 2: Convert to fraction form
    21,204.72/31,803.84 = 5,622.21/x
  3. Step 3: Cross multiply
    21,204.72x = 31,803.84 × 5,622.21
  4. Step 4: Simplify right side
    21,204.72x = 178,807,867.29
  5. Step 5: Solve for x
    x = 178,807,867.29/21,204.72
  6. Step 6: Final answer
    x = 8,432.46

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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.