Home / 40,827.80-61,241.70-13,128.60

Finding the Fourth Proportional to 40,827.80, 61,241.70 and 13,128.60

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Solution

The fourth proportional to 40,827.80, 61,241.70 and 13,128.60 is: 19,692.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,827.80 : 61,241.70 = 13,128.60 : x
  2. Step 2: Convert to fraction form
    40,827.80/61,241.70 = 13,128.60/x
  3. Step 3: Cross multiply
    40,827.80x = 61,241.70 × 13,128.60
  4. Step 4: Simplify right side
    40,827.80x = 804,017,782.62
  5. Step 5: Solve for x
    x = 804,017,782.62/40,827.80
  6. Step 6: Final answer
    x = 19,692.90

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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.