Home / 20,827.18-31,240.35-5,244.38

Finding the Fourth Proportional to 20,827.18, 31,240.35 and 5,244.38

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Solution

The fourth proportional to 20,827.18, 31,240.35 and 5,244.38 is: 7,866.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.18 : 31,240.35 = 5,244.38 : x
  2. Step 2: Convert to fraction form
    20,827.18/31,240.35 = 5,244.38/x
  3. Step 3: Cross multiply
    20,827.18x = 31,240.35 × 5,244.38
  4. Step 4: Simplify right side
    20,827.18x = 163,836,266.73
  5. Step 5: Solve for x
    x = 163,836,266.73/20,827.18
  6. Step 6: Final answer
    x = 7,866.46

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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.