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Finding the Fourth Proportional to 26,978.52, 40,484.04 and 21,451.08

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Solution

The fourth proportional to 26,978.52, 40,484.04 and 21,451.08 is: 32,189.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,978.52 : 40,484.04 = 21,451.08 : x
  2. Step 2: Convert to fraction form
    26,978.52/40,484.04 = 21,451.08/x
  3. Step 3: Cross multiply
    26,978.52x = 40,484.04 × 21,451.08
  4. Step 4: Simplify right side
    26,978.52x = 868,426,380.76
  5. Step 5: Solve for x
    x = 868,426,380.76/26,978.52
  6. Step 6: Final answer
    x = 32,189.55

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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.