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Finding the Fourth Proportional to 35,498.65, 48,986.48 and 20,380.67

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Solution

The fourth proportional to 35,498.65, 48,986.48 and 20,380.67 is: 28,124.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,498.65 : 48,986.48 = 20,380.67 : x
  2. Step 2: Convert to fraction form
    35,498.65/48,986.48 = 20,380.67/x
  3. Step 3: Cross multiply
    35,498.65x = 48,986.48 × 20,380.67
  4. Step 4: Simplify right side
    35,498.65x = 998,377,283.34
  5. Step 5: Solve for x
    x = 998,377,283.34/35,498.65
  6. Step 6: Final answer
    x = 28,124.37

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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.