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Finding the Fourth Proportional to 10,999.35, 16,495.58 and 3,978.45

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Solution

The fourth proportional to 10,999.35, 16,495.58 and 3,978.45 is: 5,966.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.35 : 16,495.58 = 3,978.45 : x
  2. Step 2: Convert to fraction form
    10,999.35/16,495.58 = 3,978.45/x
  3. Step 3: Cross multiply
    10,999.35x = 16,495.58 × 3,978.45
  4. Step 4: Simplify right side
    10,999.35x = 65,626,850.20
  5. Step 5: Solve for x
    x = 65,626,850.20/10,999.35
  6. Step 6: Final answer
    x = 5,966.43

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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.