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Finding the Fourth Proportional to 26,730, 36,844.90 and 21,055.77

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Solution

The fourth proportional to 26,730, 36,844.90 and 21,055.77 is: 29,023.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,730 : 36,844.90 = 21,055.77 : x
  2. Step 2: Convert to fraction form
    26,730/36,844.90 = 21,055.77/x
  3. Step 3: Cross multiply
    26,730x = 36,844.90 × 21,055.77
  4. Step 4: Simplify right side
    26,730x = 775,797,740.07
  5. Step 5: Solve for x
    x = 775,797,740.07/26,730
  6. Step 6: Final answer
    x = 29,023.48

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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.