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Finding the Fourth Proportional to 22,810.80, 34,216.20 and 18,922.80

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Solution

The fourth proportional to 22,810.80, 34,216.20 and 18,922.80 is: 28,384.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,810.80 : 34,216.20 = 18,922.80 : x
  2. Step 2: Convert to fraction form
    22,810.80/34,216.20 = 18,922.80/x
  3. Step 3: Cross multiply
    22,810.80x = 34,216.20 × 18,922.80
  4. Step 4: Simplify right side
    22,810.80x = 647,466,309.36
  5. Step 5: Solve for x
    x = 647,466,309.36/22,810.80
  6. Step 6: Final answer
    x = 28,384.20

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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.