Home / 31,388.25-47,085.47-10,319.75

Finding the Fourth Proportional to 31,388.25, 47,085.47 and 10,319.75

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Solution

The fourth proportional to 31,388.25, 47,085.47 and 10,319.75 is: 15,480.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,388.25 : 47,085.47 = 10,319.75 : x
  2. Step 2: Convert to fraction form
    31,388.25/47,085.47 = 10,319.75/x
  3. Step 3: Cross multiply
    31,388.25x = 47,085.47 × 10,319.75
  4. Step 4: Simplify right side
    31,388.25x = 485,909,992.01
  5. Step 5: Solve for x
    x = 485,909,992.01/31,388.25
  6. Step 6: Final answer
    x = 15,480.63

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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.