Home / 10,985.10-16,466.85-5,439.30

Finding the Fourth Proportional to 10,985.10, 16,466.85 and 5,439.30

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Solution

The fourth proportional to 10,985.10, 16,466.85 and 5,439.30 is: 8,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,985.10 : 16,466.85 = 5,439.30 : x
  2. Step 2: Convert to fraction form
    10,985.10/16,466.85 = 5,439.30/x
  3. Step 3: Cross multiply
    10,985.10x = 16,466.85 × 5,439.30
  4. Step 4: Simplify right side
    10,985.10x = 89,568,137.21
  5. Step 5: Solve for x
    x = 89,568,137.21/10,985.10
  6. Step 6: Final answer
    x = 8,153.60

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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.