Home / 10,542.65-15,815.88-3,521.99

Finding the Fourth Proportional to 10,542.65, 15,815.88 and 3,521.99

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Solution

The fourth proportional to 10,542.65, 15,815.88 and 3,521.99 is: 5,283.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,542.65 : 15,815.88 = 3,521.99 : x
  2. Step 2: Convert to fraction form
    10,542.65/15,815.88 = 3,521.99/x
  3. Step 3: Cross multiply
    10,542.65x = 15,815.88 × 3,521.99
  4. Step 4: Simplify right side
    10,542.65x = 55,703,292.12
  5. Step 5: Solve for x
    x = 55,703,292.12/10,542.65
  6. Step 6: Final answer
    x = 5,283.62

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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.