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Finding the Fourth Proportional to 35,393.80, 48,844.59 and 20,289.32

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Solution

The fourth proportional to 35,393.80, 48,844.59 and 20,289.32 is: 27,999.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,393.80 : 48,844.59 = 20,289.32 : x
  2. Step 2: Convert to fraction form
    35,393.80/48,844.59 = 20,289.32/x
  3. Step 3: Cross multiply
    35,393.80x = 48,844.59 × 20,289.32
  4. Step 4: Simplify right side
    35,393.80x = 991,023,516.78
  5. Step 5: Solve for x
    x = 991,023,516.78/35,393.80
  6. Step 6: Final answer
    x = 27,999.92

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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.