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Finding the Fourth Proportional to 22,458.80, 33,688.20 and 19,953.20

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Solution

The fourth proportional to 22,458.80, 33,688.20 and 19,953.20 is: 29,929.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,458.80 : 33,688.20 = 19,953.20 : x
  2. Step 2: Convert to fraction form
    22,458.80/33,688.20 = 19,953.20/x
  3. Step 3: Cross multiply
    22,458.80x = 33,688.20 × 19,953.20
  4. Step 4: Simplify right side
    22,458.80x = 672,187,392.24
  5. Step 5: Solve for x
    x = 672,187,392.24/22,458.80
  6. Step 6: Final answer
    x = 29,929.80

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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.