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Finding the Fourth Proportional to 34,991.53, 48,273.77 and 20,645.67

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Solution

The fourth proportional to 34,991.53, 48,273.77 and 20,645.67 is: 28,482.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,991.53 : 48,273.77 = 20,645.67 : x
  2. Step 2: Convert to fraction form
    34,991.53/48,273.77 = 20,645.67/x
  3. Step 3: Cross multiply
    34,991.53x = 48,273.77 × 20,645.67
  4. Step 4: Simplify right side
    34,991.53x = 996,644,325.08
  5. Step 5: Solve for x
    x = 996,644,325.08/34,991.53
  6. Step 6: Final answer
    x = 28,482.44

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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.