Home / 21,223.20-31,834.77-5,640.83

Finding the Fourth Proportional to 21,223.20, 31,834.77 and 5,640.83

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Solution

The fourth proportional to 21,223.20, 31,834.77 and 5,640.83 is: 8,461.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223.20 : 31,834.77 = 5,640.83 : x
  2. Step 2: Convert to fraction form
    21,223.20/31,834.77 = 5,640.83/x
  3. Step 3: Cross multiply
    21,223.20x = 31,834.77 × 5,640.83
  4. Step 4: Simplify right side
    21,223.20x = 179,574,496.44
  5. Step 5: Solve for x
    x = 179,574,496.44/21,223.20
  6. Step 6: Final answer
    x = 8,461.23

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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.