Home / 21,322.18-31,982.36-7,283.46

Finding the Fourth Proportional to 21,322.18, 31,982.36 and 7,283.46

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Solution

The fourth proportional to 21,322.18, 31,982.36 and 7,283.46 is: 10,924.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.18 : 31,982.36 = 7,283.46 : x
  2. Step 2: Convert to fraction form
    21,322.18/31,982.36 = 7,283.46/x
  3. Step 3: Cross multiply
    21,322.18x = 31,982.36 × 7,283.46
  4. Step 4: Simplify right side
    21,322.18x = 232,942,203.35
  5. Step 5: Solve for x
    x = 232,942,203.35/21,322.18
  6. Step 6: Final answer
    x = 10,924.88

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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.