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Finding the Fourth Proportional to 10,647.36, 15,961.72 and 6,900.68

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Solution

The fourth proportional to 10,647.36, 15,961.72 and 6,900.68 is: 10,344.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,647.36 : 15,961.72 = 6,900.68 : x
  2. Step 2: Convert to fraction form
    10,647.36/15,961.72 = 6,900.68/x
  3. Step 3: Cross multiply
    10,647.36x = 15,961.72 × 6,900.68
  4. Step 4: Simplify right side
    10,647.36x = 110,146,721.97
  5. Step 5: Solve for x
    x = 110,146,721.97/10,647.36
  6. Step 6: Final answer
    x = 10,344.98

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1.5x scale

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.