Home / 21,747.99-30,010.80-12,793.76

Finding the Fourth Proportional to 21,747.99, 30,010.80 and 12,793.76

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Solution

The fourth proportional to 21,747.99, 30,010.80 and 12,793.76 is: 17,654.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,747.99 : 30,010.80 = 12,793.76 : x
  2. Step 2: Convert to fraction form
    21,747.99/30,010.80 = 12,793.76/x
  3. Step 3: Cross multiply
    21,747.99x = 30,010.80 × 12,793.76
  4. Step 4: Simplify right side
    21,747.99x = 383,950,935.09
  5. Step 5: Solve for x
    x = 383,950,935.09/21,747.99
  6. Step 6: Final answer
    x = 17,654.55

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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.