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Finding the Fourth Proportional to 35,443.64, 48,913.87 and 21,100.22

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Solution

The fourth proportional to 35,443.64, 48,913.87 and 21,100.22 is: 29,119.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,443.64 : 48,913.87 = 21,100.22 : x
  2. Step 2: Convert to fraction form
    35,443.64/48,913.87 = 21,100.22/x
  3. Step 3: Cross multiply
    35,443.64x = 48,913.87 × 21,100.22
  4. Step 4: Simplify right side
    35,443.64x = 1,032,093,120.73
  5. Step 5: Solve for x
    x = 1,032,093,120.73/35,443.64
  6. Step 6: Final answer
    x = 29,119.28

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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.