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Finding the Fourth Proportional to 35,342.64, 48,769.92 and 20,231.82

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Solution

The fourth proportional to 35,342.64, 48,769.92 and 20,231.82 is: 27,918.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,342.64 : 48,769.92 = 20,231.82 : x
  2. Step 2: Convert to fraction form
    35,342.64/48,769.92 = 20,231.82/x
  3. Step 3: Cross multiply
    35,342.64x = 48,769.92 × 20,231.82
  4. Step 4: Simplify right side
    35,342.64x = 986,704,242.85
  5. Step 5: Solve for x
    x = 986,704,242.85/35,342.64
  6. Step 6: Final answer
    x = 27,918.24

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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.