Home / 10,905.22-16,358.40-3,509.11

Finding the Fourth Proportional to 10,905.22, 16,358.40 and 3,509.11

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Solution

The fourth proportional to 10,905.22, 16,358.40 and 3,509.11 is: 5,263.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,905.22 : 16,358.40 = 3,509.11 : x
  2. Step 2: Convert to fraction form
    10,905.22/16,358.40 = 3,509.11/x
  3. Step 3: Cross multiply
    10,905.22x = 16,358.40 × 3,509.11
  4. Step 4: Simplify right side
    10,905.22x = 57,403,425.02
  5. Step 5: Solve for x
    x = 57,403,425.02/10,905.22
  6. Step 6: Final answer
    x = 5,263.85

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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.