Home / 21,747.89-32,572.32-12,964.66

Finding the Fourth Proportional to 21,747.89, 32,572.32 and 12,964.66

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Solution

The fourth proportional to 21,747.89, 32,572.32 and 12,964.66 is: 19,417.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,747.89 : 32,572.32 = 12,964.66 : x
  2. Step 2: Convert to fraction form
    21,747.89/32,572.32 = 12,964.66/x
  3. Step 3: Cross multiply
    21,747.89x = 32,572.32 × 12,964.66
  4. Step 4: Simplify right side
    21,747.89x = 422,288,891.35
  5. Step 5: Solve for x
    x = 422,288,891.35/21,747.89
  6. Step 6: Final answer
    x = 19,417.46

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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.