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Finding the Fourth Proportional to 35,283.87, 48,688.70 and 20,171.70

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Solution

The fourth proportional to 35,283.87, 48,688.70 and 20,171.70 is: 27,835.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,283.87 : 48,688.70 = 20,171.70 : x
  2. Step 2: Convert to fraction form
    35,283.87/48,688.70 = 20,171.70/x
  3. Step 3: Cross multiply
    35,283.87x = 48,688.70 × 20,171.70
  4. Step 4: Simplify right side
    35,283.87x = 982,133,748.93
  5. Step 5: Solve for x
    x = 982,133,748.93/35,283.87
  6. Step 6: Final answer
    x = 27,835.20

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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.