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Finding the Fourth Proportional to 10,814.88, 16,220.88 and 6,878.28

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Solution

The fourth proportional to 10,814.88, 16,220.88 and 6,878.28 is: 10,316.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,814.88 : 16,220.88 = 6,878.28 : x
  2. Step 2: Convert to fraction form
    10,814.88/16,220.88 = 6,878.28/x
  3. Step 3: Cross multiply
    10,814.88x = 16,220.88 × 6,878.28
  4. Step 4: Simplify right side
    10,814.88x = 111,571,754.49
  5. Step 5: Solve for x
    x = 111,571,754.49/10,814.88
  6. Step 6: Final answer
    x = 10,316.50

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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.