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Finding the Fourth Proportional to 20,501.60, 30,756.49 and 7,354.98

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Solution

The fourth proportional to 20,501.60, 30,756.49 and 7,354.98 is: 11,033.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,501.60 : 30,756.49 = 7,354.98 : x
  2. Step 2: Convert to fraction form
    20,501.60/30,756.49 = 7,354.98/x
  3. Step 3: Cross multiply
    20,501.60x = 30,756.49 × 7,354.98
  4. Step 4: Simplify right side
    20,501.60x = 226,213,350.43
  5. Step 5: Solve for x
    x = 226,213,350.43/20,501.60
  6. Step 6: Final answer
    x = 11,033.94

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1.5x scale

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.