Home / 31,984.60-47,976.90-20,903.80

Finding the Fourth Proportional to 31,984.60, 47,976.90 and 20,903.80

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Solution

The fourth proportional to 31,984.60, 47,976.90 and 20,903.80 is: 31,355.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,984.60 : 47,976.90 = 20,903.80 : x
  2. Step 2: Convert to fraction form
    31,984.60/47,976.90 = 20,903.80/x
  3. Step 3: Cross multiply
    31,984.60x = 47,976.90 × 20,903.80
  4. Step 4: Simplify right side
    31,984.60x = 1,002,899,522.22
  5. Step 5: Solve for x
    x = 1,002,899,522.22/31,984.60
  6. Step 6: Final answer
    x = 31,355.70

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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.