Home / 21,204.40-31,807.18-5,622

Finding the Fourth Proportional to 21,204.40, 31,807.18 and 5,622

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Solution

The fourth proportional to 21,204.40, 31,807.18 and 5,622 is: 8,433.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.40 : 31,807.18 = 5,622 : x
  2. Step 2: Convert to fraction form
    21,204.40/31,807.18 = 5,622/x
  3. Step 3: Cross multiply
    21,204.40x = 31,807.18 × 5,622
  4. Step 4: Simplify right side
    21,204.40x = 178,819,965.96
  5. Step 5: Solve for x
    x = 178,819,965.96/21,204.40
  6. Step 6: Final answer
    x = 8,433.15

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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.