Home / 18,997.74-26,199.82-15,821.52

Finding the Fourth Proportional to 18,997.74, 26,199.82 and 15,821.52

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Solution

The fourth proportional to 18,997.74, 26,199.82 and 15,821.52 is: 21,819.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,997.74 : 26,199.82 = 15,821.52 : x
  2. Step 2: Convert to fraction form
    18,997.74/26,199.82 = 15,821.52/x
  3. Step 3: Cross multiply
    18,997.74x = 26,199.82 × 15,821.52
  4. Step 4: Simplify right side
    18,997.74x = 414,520,976.13
  5. Step 5: Solve for x
    x = 414,520,976.13/18,997.74
  6. Step 6: Final answer
    x = 21,819.49

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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.