Home / 31,629.64-47,437.82-11,907.72

Finding the Fourth Proportional to 31,629.64, 47,437.82 and 11,907.72

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Solution

The fourth proportional to 31,629.64, 47,437.82 and 11,907.72 is: 17,859.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,629.64 : 47,437.82 = 11,907.72 : x
  2. Step 2: Convert to fraction form
    31,629.64/47,437.82 = 11,907.72/x
  3. Step 3: Cross multiply
    31,629.64x = 47,437.82 × 11,907.72
  4. Step 4: Simplify right side
    31,629.64x = 564,876,277.97
  5. Step 5: Solve for x
    x = 564,876,277.97/31,629.64
  6. Step 6: Final answer
    x = 17,859.08

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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.