Home / 10,313.79-15,469.30-2,918.89

Finding the Fourth Proportional to 10,313.79, 15,469.30 and 2,918.89

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Solution

The fourth proportional to 10,313.79, 15,469.30 and 2,918.89 is: 4,377.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,313.79 : 15,469.30 = 2,918.89 : x
  2. Step 2: Convert to fraction form
    10,313.79/15,469.30 = 2,918.89/x
  3. Step 3: Cross multiply
    10,313.79x = 15,469.30 × 2,918.89
  4. Step 4: Simplify right side
    10,313.79x = 45,153,185.08
  5. Step 5: Solve for x
    x = 45,153,185.08/10,313.79
  6. Step 6: Final answer
    x = 4,377.94

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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.