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Finding the Fourth Proportional to 29,358.48, 40,514.48 and 15,929.44

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Solution

The fourth proportional to 29,358.48, 40,514.48 and 15,929.44 is: 21,982.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,358.48 : 40,514.48 = 15,929.44 : x
  2. Step 2: Convert to fraction form
    29,358.48/40,514.48 = 15,929.44/x
  3. Step 3: Cross multiply
    29,358.48x = 40,514.48 × 15,929.44
  4. Step 4: Simplify right side
    29,358.48x = 645,372,978.29
  5. Step 5: Solve for x
    x = 645,372,978.29/29,358.48
  6. Step 6: Final answer
    x = 21,982.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.