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Finding the Fourth Proportional to 22,530.80, 33,731.40 and 13,782.80

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Solution

The fourth proportional to 22,530.80, 33,731.40 and 13,782.80 is: 20,634.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,530.80 : 33,731.40 = 13,782.80 : x
  2. Step 2: Convert to fraction form
    22,530.80/33,731.40 = 13,782.80/x
  3. Step 3: Cross multiply
    22,530.80x = 33,731.40 × 13,782.80
  4. Step 4: Simplify right side
    22,530.80x = 464,913,139.92
  5. Step 5: Solve for x
    x = 464,913,139.92/22,530.80
  6. Step 6: Final answer
    x = 20,634.56

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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.