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Finding the Fourth Proportional to 35,388.68, 53,042.78 and 18,495.65

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Solution

The fourth proportional to 35,388.68, 53,042.78 and 18,495.65 is: 27,722.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,388.68 : 53,042.78 = 18,495.65 : x
  2. Step 2: Convert to fraction form
    35,388.68/53,042.78 = 18,495.65/x
  3. Step 3: Cross multiply
    35,388.68x = 53,042.78 × 18,495.65
  4. Step 4: Simplify right side
    35,388.68x = 981,060,693.91
  5. Step 5: Solve for x
    x = 981,060,693.91/35,388.68
  6. Step 6: Final answer
    x = 27,722.44

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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.