Home / 10,905.38-16,360.82-4,329.40

Finding the Fourth Proportional to 10,905.38, 16,360.82 and 4,329.40

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Solution

The fourth proportional to 10,905.38, 16,360.82 and 4,329.40 is: 6,495.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,905.38 : 16,360.82 = 4,329.40 : x
  2. Step 2: Convert to fraction form
    10,905.38/16,360.82 = 4,329.40/x
  3. Step 3: Cross multiply
    10,905.38x = 16,360.82 × 4,329.40
  4. Step 4: Simplify right side
    10,905.38x = 70,832,534.11
  5. Step 5: Solve for x
    x = 70,832,534.11/10,905.38
  6. Step 6: Final answer
    x = 6,495.19

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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.