Home / 21,590.31-32,343.90-13,245.96

Finding the Fourth Proportional to 21,590.31, 32,343.90 and 13,245.96

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Solution

The fourth proportional to 21,590.31, 32,343.90 and 13,245.96 is: 19,843.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,590.31 : 32,343.90 = 13,245.96 : x
  2. Step 2: Convert to fraction form
    21,590.31/32,343.90 = 13,245.96/x
  3. Step 3: Cross multiply
    21,590.31x = 32,343.90 × 13,245.96
  4. Step 4: Simplify right side
    21,590.31x = 428,426,005.64
  5. Step 5: Solve for x
    x = 428,426,005.64/21,590.31
  6. Step 6: Final answer
    x = 19,843.44

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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.