Home / 21,437.31-32,159.08-6,647.42

Finding the Fourth Proportional to 21,437.31, 32,159.08 and 6,647.42

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Solution

The fourth proportional to 21,437.31, 32,159.08 and 6,647.42 is: 9,972.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,437.31 : 32,159.08 = 6,647.42 : x
  2. Step 2: Convert to fraction form
    21,437.31/32,159.08 = 6,647.42/x
  3. Step 3: Cross multiply
    21,437.31x = 32,159.08 × 6,647.42
  4. Step 4: Simplify right side
    21,437.31x = 213,774,781.99
  5. Step 5: Solve for x
    x = 213,774,781.99/21,437.31
  6. Step 6: Final answer
    x = 9,972.09

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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.