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Finding the Fourth Proportional to 10,480.10, 15,720.15 and 3,554.66

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Solution

The fourth proportional to 10,480.10, 15,720.15 and 3,554.66 is: 5,331.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,480.10 : 15,720.15 = 3,554.66 : x
  2. Step 2: Convert to fraction form
    10,480.10/15,720.15 = 3,554.66/x
  3. Step 3: Cross multiply
    10,480.10x = 15,720.15 × 3,554.66
  4. Step 4: Simplify right side
    10,480.10x = 55,879,788.40
  5. Step 5: Solve for x
    x = 55,879,788.40/10,480.10
  6. Step 6: Final answer
    x = 5,331.99

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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.