Home / 31,390.74-47,067.66-12,671.39

Finding the Fourth Proportional to 31,390.74, 47,067.66 and 12,671.39

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Solution

The fourth proportional to 31,390.74, 47,067.66 and 12,671.39 is: 18,999.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,390.74 : 47,067.66 = 12,671.39 : x
  2. Step 2: Convert to fraction form
    31,390.74/47,067.66 = 12,671.39/x
  3. Step 3: Cross multiply
    31,390.74x = 47,067.66 × 12,671.39
  4. Step 4: Simplify right side
    31,390.74x = 596,412,493.52
  5. Step 5: Solve for x
    x = 596,412,493.52/31,390.74
  6. Step 6: Final answer
    x = 18,999.63

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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.