Home / 19,871.60-29,807.32-5,080.49

Finding the Fourth Proportional to 19,871.60, 29,807.32 and 5,080.49

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Solution

The fourth proportional to 19,871.60, 29,807.32 and 5,080.49 is: 7,620.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,871.60 : 29,807.32 = 5,080.49 : x
  2. Step 2: Convert to fraction form
    19,871.60/29,807.32 = 5,080.49/x
  3. Step 3: Cross multiply
    19,871.60x = 29,807.32 × 5,080.49
  4. Step 4: Simplify right side
    19,871.60x = 151,435,791.19
  5. Step 5: Solve for x
    x = 151,435,791.19/19,871.60
  6. Step 6: Final answer
    x = 7,620.71

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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.