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Finding the Fourth Proportional to 15,448.78, 21,311.44 and 9,773.97

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Solution

The fourth proportional to 15,448.78, 21,311.44 and 9,773.97 is: 13,483.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,448.78 : 21,311.44 = 9,773.97 : x
  2. Step 2: Convert to fraction form
    15,448.78/21,311.44 = 9,773.97/x
  3. Step 3: Cross multiply
    15,448.78x = 21,311.44 × 9,773.97
  4. Step 4: Simplify right side
    15,448.78x = 208,297,375.22
  5. Step 5: Solve for x
    x = 208,297,375.22/15,448.78
  6. Step 6: Final answer
    x = 13,483.10

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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.