Home / 12,815.75-19,227.04-5,420.52

Finding the Fourth Proportional to 12,815.75, 19,227.04 and 5,420.52

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Solution

The fourth proportional to 12,815.75, 19,227.04 and 5,420.52 is: 8,132.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,815.75 : 19,227.04 = 5,420.52 : x
  2. Step 2: Convert to fraction form
    12,815.75/19,227.04 = 5,420.52/x
  3. Step 3: Cross multiply
    12,815.75x = 19,227.04 × 5,420.52
  4. Step 4: Simplify right side
    12,815.75x = 104,220,541.31
  5. Step 5: Solve for x
    x = 104,220,541.31/12,815.75
  6. Step 6: Final answer
    x = 8,132.22

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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.