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Finding the Fourth Proportional to 35,503.80, 48,997.62 and 20,401.38

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Solution

The fourth proportional to 35,503.80, 48,997.62 and 20,401.38 is: 28,155.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,503.80 : 48,997.62 = 20,401.38 : x
  2. Step 2: Convert to fraction form
    35,503.80/48,997.62 = 20,401.38/x
  3. Step 3: Cross multiply
    35,503.80x = 48,997.62 × 20,401.38
  4. Step 4: Simplify right side
    35,503.80x = 999,619,064.72
  5. Step 5: Solve for x
    x = 999,619,064.72/35,503.80
  6. Step 6: Final answer
    x = 28,155.27

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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.