Home / 31,511.56-47,275.54-11,791.64

Finding the Fourth Proportional to 31,511.56, 47,275.54 and 11,791.64

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Solution

The fourth proportional to 31,511.56, 47,275.54 and 11,791.64 is: 17,690.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,511.56 : 47,275.54 = 11,791.64 : x
  2. Step 2: Convert to fraction form
    31,511.56/47,275.54 = 11,791.64/x
  3. Step 3: Cross multiply
    31,511.56x = 47,275.54 × 11,791.64
  4. Step 4: Simplify right side
    31,511.56x = 557,456,148.49
  5. Step 5: Solve for x
    x = 557,456,148.49/31,511.56
  6. Step 6: Final answer
    x = 17,690.53

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1.5x scale

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.