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Finding the Fourth Proportional to 35,493.66, 48,982.68 and 20,390.58

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Solution

The fourth proportional to 35,493.66, 48,982.68 and 20,390.58 is: 28,139.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,493.66 : 48,982.68 = 20,390.58 : x
  2. Step 2: Convert to fraction form
    35,493.66/48,982.68 = 20,390.58/x
  3. Step 3: Cross multiply
    35,493.66x = 48,982.68 × 20,390.58
  4. Step 4: Simplify right side
    35,493.66x = 998,785,255.15
  5. Step 5: Solve for x
    x = 998,785,255.15/35,493.66
  6. Step 6: Final answer
    x = 28,139.82

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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.