Home / 21,171.75-31,764.74-14,853.21

Finding the Fourth Proportional to 21,171.75, 31,764.74 and 14,853.21

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Solution

The fourth proportional to 21,171.75, 31,764.74 and 14,853.21 is: 22,284.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,171.75 : 31,764.74 = 14,853.21 : x
  2. Step 2: Convert to fraction form
    21,171.75/31,764.74 = 14,853.21/x
  3. Step 3: Cross multiply
    21,171.75x = 31,764.74 × 14,853.21
  4. Step 4: Simplify right side
    21,171.75x = 471,808,353.82
  5. Step 5: Solve for x
    x = 471,808,353.82/21,171.75
  6. Step 6: Final answer
    x = 22,284.81

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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.