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Finding the Fourth Proportional to 9,980.05, 13,773.09 and 5,503.79

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Solution

The fourth proportional to 9,980.05, 13,773.09 and 5,503.79 is: 7,595.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,980.05 : 13,773.09 = 5,503.79 : x
  2. Step 2: Convert to fraction form
    9,980.05/13,773.09 = 5,503.79/x
  3. Step 3: Cross multiply
    9,980.05x = 13,773.09 × 5,503.79
  4. Step 4: Simplify right side
    9,980.05x = 75,804,229.44
  5. Step 5: Solve for x
    x = 75,804,229.44/9,980.05
  6. Step 6: Final answer
    x = 7,595.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.