Home / 31,485.75-47,214.39-9,291.33

Finding the Fourth Proportional to 31,485.75, 47,214.39 and 9,291.33

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Solution

The fourth proportional to 31,485.75, 47,214.39 and 9,291.33 is: 13,932.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,485.75 : 47,214.39 = 9,291.33 : x
  2. Step 2: Convert to fraction form
    31,485.75/47,214.39 = 9,291.33/x
  3. Step 3: Cross multiply
    31,485.75x = 47,214.39 × 9,291.33
  4. Step 4: Simplify right side
    31,485.75x = 438,684,478.24
  5. Step 5: Solve for x
    x = 438,684,478.24/31,485.75
  6. Step 6: Final answer
    x = 13,932.79

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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.