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Finding the Fourth Proportional to 20,552.58, 30,810 and 7,401.76

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Solution

The fourth proportional to 20,552.58, 30,810 and 7,401.76 is: 11,095.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,552.58 : 30,810 = 7,401.76 : x
  2. Step 2: Convert to fraction form
    20,552.58/30,810 = 7,401.76/x
  3. Step 3: Cross multiply
    20,552.58x = 30,810 × 7,401.76
  4. Step 4: Simplify right side
    20,552.58x = 228,048,225.60
  5. Step 5: Solve for x
    x = 228,048,225.60/20,552.58
  6. Step 6: Final answer
    x = 11,095.84

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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.