Home / 26,791.55-36,929.64-21,117.50

Finding the Fourth Proportional to 26,791.55, 36,929.64 and 21,117.50

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Solution

The fourth proportional to 26,791.55, 36,929.64 and 21,117.50 is: 29,108.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,791.55 : 36,929.64 = 21,117.50 : x
  2. Step 2: Convert to fraction form
    26,791.55/36,929.64 = 21,117.50/x
  3. Step 3: Cross multiply
    26,791.55x = 36,929.64 × 21,117.50
  4. Step 4: Simplify right side
    26,791.55x = 779,861,672.70
  5. Step 5: Solve for x
    x = 779,861,672.70/26,791.55
  6. Step 6: Final answer
    x = 29,108.49

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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.