Home / 10,905.79-16,357.11-3,509.29

Finding the Fourth Proportional to 10,905.79, 16,357.11 and 3,509.29

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Solution

The fourth proportional to 10,905.79, 16,357.11 and 3,509.29 is: 5,263.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,905.79 : 16,357.11 = 3,509.29 : x
  2. Step 2: Convert to fraction form
    10,905.79/16,357.11 = 3,509.29/x
  3. Step 3: Cross multiply
    10,905.79x = 16,357.11 × 3,509.29
  4. Step 4: Simplify right side
    10,905.79x = 57,401,842.55
  5. Step 5: Solve for x
    x = 57,401,842.55/10,905.79
  6. Step 6: Final answer
    x = 5,263.43

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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.