Home / 26,178.48-36,139.68-20,196.72

Finding the Fourth Proportional to 26,178.48, 36,139.68 and 20,196.72

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Solution

The fourth proportional to 26,178.48, 36,139.68 and 20,196.72 is: 27,881.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,178.48 : 36,139.68 = 20,196.72 : x
  2. Step 2: Convert to fraction form
    26,178.48/36,139.68 = 20,196.72/x
  3. Step 3: Cross multiply
    26,178.48x = 36,139.68 × 20,196.72
  4. Step 4: Simplify right side
    26,178.48x = 729,902,997.85
  5. Step 5: Solve for x
    x = 729,902,997.85/26,178.48
  6. Step 6: Final answer
    x = 27,881.79

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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.