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Finding the Fourth Proportional to 35,503.84, 48,989.91 and 20,188.90

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Solution

The fourth proportional to 35,503.84, 48,989.91 and 20,188.90 is: 27,857.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,503.84 : 48,989.91 = 20,188.90 : x
  2. Step 2: Convert to fraction form
    35,503.84/48,989.91 = 20,188.90/x
  3. Step 3: Cross multiply
    35,503.84x = 48,989.91 × 20,188.90
  4. Step 4: Simplify right side
    35,503.84x = 989,052,394.00
  5. Step 5: Solve for x
    x = 989,052,394.00/35,503.84
  6. Step 6: Final answer
    x = 27,857.62

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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.