Home / 10,212.67-15,320.31-3,639.52

Finding the Fourth Proportional to 10,212.67, 15,320.31 and 3,639.52

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Solution

The fourth proportional to 10,212.67, 15,320.31 and 3,639.52 is: 5,459.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,212.67 : 15,320.31 = 3,639.52 : x
  2. Step 2: Convert to fraction form
    10,212.67/15,320.31 = 3,639.52/x
  3. Step 3: Cross multiply
    10,212.67x = 15,320.31 × 3,639.52
  4. Step 4: Simplify right side
    10,212.67x = 55,758,574.65
  5. Step 5: Solve for x
    x = 55,758,574.65/10,212.67
  6. Step 6: Final answer
    x = 5,459.75

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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.