Home / 20,836.39-31,254.78-5,254.03

Finding the Fourth Proportional to 20,836.39, 31,254.78 and 5,254.03

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Solution

The fourth proportional to 20,836.39, 31,254.78 and 5,254.03 is: 7,881.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.39 : 31,254.78 = 5,254.03 : x
  2. Step 2: Convert to fraction form
    20,836.39/31,254.78 = 5,254.03/x
  3. Step 3: Cross multiply
    20,836.39x = 31,254.78 × 5,254.03
  4. Step 4: Simplify right side
    20,836.39x = 164,213,551.76
  5. Step 5: Solve for x
    x = 164,213,551.76/20,836.39
  6. Step 6: Final answer
    x = 7,881.09

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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.