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Finding the Fourth Proportional to 23,978.80, 33,089.92 and 15,031.12

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Solution

The fourth proportional to 23,978.80, 33,089.92 and 15,031.12 is: 20,742.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,978.80 : 33,089.92 = 15,031.12 : x
  2. Step 2: Convert to fraction form
    23,978.80/33,089.92 = 15,031.12/x
  3. Step 3: Cross multiply
    23,978.80x = 33,089.92 × 15,031.12
  4. Step 4: Simplify right side
    23,978.80x = 497,378,558.31
  5. Step 5: Solve for x
    x = 497,378,558.31/23,978.80
  6. Step 6: Final answer
    x = 20,742.43

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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.