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Finding the Fourth Proportional to 29,388.40, 40,556.08 and 15,959.88

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Solution

The fourth proportional to 29,388.40, 40,556.08 and 15,959.88 is: 22,024.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,388.40 : 40,556.08 = 15,959.88 : x
  2. Step 2: Convert to fraction form
    29,388.40/40,556.08 = 15,959.88/x
  3. Step 3: Cross multiply
    29,388.40x = 40,556.08 × 15,959.88
  4. Step 4: Simplify right side
    29,388.40x = 647,270,170.07
  5. Step 5: Solve for x
    x = 647,270,170.07/29,388.40
  6. Step 6: Final answer
    x = 22,024.68

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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.