Home / 35,688.80-53,468.40-21,821.60

Finding the Fourth Proportional to 35,688.80, 53,468.40 and 21,821.60

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Solution

The fourth proportional to 35,688.80, 53,468.40 and 21,821.60 is: 32,692.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,688.80 : 53,468.40 = 21,821.60 : x
  2. Step 2: Convert to fraction form
    35,688.80/53,468.40 = 21,821.60/x
  3. Step 3: Cross multiply
    35,688.80x = 53,468.40 × 21,821.60
  4. Step 4: Simplify right side
    35,688.80x = 1,166,766,037.44
  5. Step 5: Solve for x
    x = 1,166,766,037.44/35,688.80
  6. Step 6: Final answer
    x = 32,692.78

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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.