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Finding the Fourth Proportional to 35,487.20, 53,205.20 and 19,909.60

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Solution

The fourth proportional to 35,487.20, 53,205.20 and 19,909.60 is: 29,850.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,487.20 : 53,205.20 = 19,909.60 : x
  2. Step 2: Convert to fraction form
    35,487.20/53,205.20 = 19,909.60/x
  3. Step 3: Cross multiply
    35,487.20x = 53,205.20 × 19,909.60
  4. Step 4: Simplify right side
    35,487.20x = 1,059,294,249.92
  5. Step 5: Solve for x
    x = 1,059,294,249.92/35,487.20
  6. Step 6: Final answer
    x = 29,850.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.