Home / 15,661.47-23,491.89-3,815.31

Finding the Fourth Proportional to 15,661.47, 23,491.89 and 3,815.31

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Solution

The fourth proportional to 15,661.47, 23,491.89 and 3,815.31 is: 5,722.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,661.47 : 23,491.89 = 3,815.31 : x
  2. Step 2: Convert to fraction form
    15,661.47/23,491.89 = 3,815.31/x
  3. Step 3: Cross multiply
    15,661.47x = 23,491.89 × 3,815.31
  4. Step 4: Simplify right side
    15,661.47x = 89,628,842.84
  5. Step 5: Solve for x
    x = 89,628,842.84/15,661.47
  6. Step 6: Final answer
    x = 5,722.89

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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.