Home / 31,458.96-47,171.36-15,629.28

Finding the Fourth Proportional to 31,458.96, 47,171.36 and 15,629.28

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Solution

The fourth proportional to 31,458.96, 47,171.36 and 15,629.28 is: 23,435.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,458.96 : 47,171.36 = 15,629.28 : x
  2. Step 2: Convert to fraction form
    31,458.96/47,171.36 = 15,629.28/x
  3. Step 3: Cross multiply
    31,458.96x = 47,171.36 × 15,629.28
  4. Step 4: Simplify right side
    31,458.96x = 737,254,393.42
  5. Step 5: Solve for x
    x = 737,254,393.42/31,458.96
  6. Step 6: Final answer
    x = 23,435.43

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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.