Home / 20,763.80-31,136.30-5,969.40

Finding the Fourth Proportional to 20,763.80, 31,136.30 and 5,969.40

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Solution

The fourth proportional to 20,763.80, 31,136.30 and 5,969.40 is: 8,951.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.80 : 31,136.30 = 5,969.40 : x
  2. Step 2: Convert to fraction form
    20,763.80/31,136.30 = 5,969.40/x
  3. Step 3: Cross multiply
    20,763.80x = 31,136.30 × 5,969.40
  4. Step 4: Simplify right side
    20,763.80x = 185,865,029.22
  5. Step 5: Solve for x
    x = 185,865,029.22/20,763.80
  6. Step 6: Final answer
    x = 8,951.40

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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.