Home / 21,857.48-32,761.42-19,219.89

Finding the Fourth Proportional to 21,857.48, 32,761.42 and 19,219.89

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Solution

The fourth proportional to 21,857.48, 32,761.42 and 19,219.89 is: 28,808.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,857.48 : 32,761.42 = 19,219.89 : x
  2. Step 2: Convert to fraction form
    21,857.48/32,761.42 = 19,219.89/x
  3. Step 3: Cross multiply
    21,857.48x = 32,761.42 × 19,219.89
  4. Step 4: Simplify right side
    21,857.48x = 629,670,717.74
  5. Step 5: Solve for x
    x = 629,670,717.74/21,857.48
  6. Step 6: Final answer
    x = 28,808.02

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1.5x scale

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.