Home / 31,646.83-47,470.35-11,920.09

Finding the Fourth Proportional to 31,646.83, 47,470.35 and 11,920.09

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Solution

The fourth proportional to 31,646.83, 47,470.35 and 11,920.09 is: 17,880.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,646.83 : 47,470.35 = 11,920.09 : x
  2. Step 2: Convert to fraction form
    31,646.83/47,470.35 = 11,920.09/x
  3. Step 3: Cross multiply
    31,646.83x = 47,470.35 × 11,920.09
  4. Step 4: Simplify right side
    31,646.83x = 565,850,844.33
  5. Step 5: Solve for x
    x = 565,850,844.33/31,646.83
  6. Step 6: Final answer
    x = 17,880.17

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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.