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Finding the Fourth Proportional to 24,139.84, 36,202.08 and 7,720

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Solution

The fourth proportional to 24,139.84, 36,202.08 and 7,720 is: 11,577.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,139.84 : 36,202.08 = 7,720 : x
  2. Step 2: Convert to fraction form
    24,139.84/36,202.08 = 7,720/x
  3. Step 3: Cross multiply
    24,139.84x = 36,202.08 × 7,720
  4. Step 4: Simplify right side
    24,139.84x = 279,480,057.60
  5. Step 5: Solve for x
    x = 279,480,057.60/24,139.84
  6. Step 6: Final answer
    x = 11,577.54

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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.