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Finding the Fourth Proportional to 35,354.64, 48,770.96 and 21,921.60

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Solution

The fourth proportional to 35,354.64, 48,770.96 and 21,921.60 is: 30,240.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,354.64 : 48,770.96 = 21,921.60 : x
  2. Step 2: Convert to fraction form
    35,354.64/48,770.96 = 21,921.60/x
  3. Step 3: Cross multiply
    35,354.64x = 48,770.96 × 21,921.60
  4. Step 4: Simplify right side
    35,354.64x = 1,069,137,476.74
  5. Step 5: Solve for x
    x = 1,069,137,476.74/35,354.64
  6. Step 6: Final answer
    x = 30,240.37

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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.