Home / 31,943.07-47,898.72-18,620.58

Finding the Fourth Proportional to 31,943.07, 47,898.72 and 18,620.58

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Solution

The fourth proportional to 31,943.07, 47,898.72 and 18,620.58 is: 27,921.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,943.07 : 47,898.72 = 18,620.58 : x
  2. Step 2: Convert to fraction form
    31,943.07/47,898.72 = 18,620.58/x
  3. Step 3: Cross multiply
    31,943.07x = 47,898.72 × 18,620.58
  4. Step 4: Simplify right side
    31,943.07x = 891,901,947.66
  5. Step 5: Solve for x
    x = 891,901,947.66/31,943.07
  6. Step 6: Final answer
    x = 27,921.61

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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.