Home / 21,159.58-31,743.82-8,011.66

Finding the Fourth Proportional to 21,159.58, 31,743.82 and 8,011.66

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Solution

The fourth proportional to 21,159.58, 31,743.82 and 8,011.66 is: 12,019.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.58 : 31,743.82 = 8,011.66 : x
  2. Step 2: Convert to fraction form
    21,159.58/31,743.82 = 8,011.66/x
  3. Step 3: Cross multiply
    21,159.58x = 31,743.82 × 8,011.66
  4. Step 4: Simplify right side
    21,159.58x = 254,320,692.94
  5. Step 5: Solve for x
    x = 254,320,692.94/21,159.58
  6. Step 6: Final answer
    x = 12,019.17

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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.