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Finding the Fourth Proportional to 35,450.60, 48,918.48 and 20,912.51

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Solution

The fourth proportional to 35,450.60, 48,918.48 and 20,912.51 is: 28,857.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,450.60 : 48,918.48 = 20,912.51 : x
  2. Step 2: Convert to fraction form
    35,450.60/48,918.48 = 20,912.51/x
  3. Step 3: Cross multiply
    35,450.60x = 48,918.48 × 20,912.51
  4. Step 4: Simplify right side
    35,450.60x = 1,023,007,957.59
  5. Step 5: Solve for x
    x = 1,023,007,957.59/35,450.60
  6. Step 6: Final answer
    x = 28,857.29

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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.