Home / 31,427.92-47,137.02-20,412.73

Finding the Fourth Proportional to 31,427.92, 47,137.02 and 20,412.73

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Solution

The fourth proportional to 31,427.92, 47,137.02 and 20,412.73 is: 30,615.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,427.92 : 47,137.02 = 20,412.73 : x
  2. Step 2: Convert to fraction form
    31,427.92/47,137.02 = 20,412.73/x
  3. Step 3: Cross multiply
    31,427.92x = 47,137.02 × 20,412.73
  4. Step 4: Simplify right side
    31,427.92x = 962,195,262.26
  5. Step 5: Solve for x
    x = 962,195,262.26/31,427.92
  6. Step 6: Final answer
    x = 30,615.94

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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.