Home / 10,156.62-15,239.79-6,645.81

Finding the Fourth Proportional to 10,156.62, 15,239.79 and 6,645.81

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Solution

The fourth proportional to 10,156.62, 15,239.79 and 6,645.81 is: 9,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,156.62 : 15,239.79 = 6,645.81 : x
  2. Step 2: Convert to fraction form
    10,156.62/15,239.79 = 6,645.81/x
  3. Step 3: Cross multiply
    10,156.62x = 15,239.79 × 6,645.81
  4. Step 4: Simplify right side
    10,156.62x = 101,280,748.78
  5. Step 5: Solve for x
    x = 101,280,748.78/10,156.62
  6. Step 6: Final answer
    x = 9,971.90

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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.