Home / 21,297.88-31,920.90-9,607.96

Finding the Fourth Proportional to 21,297.88, 31,920.90 and 9,607.96

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Solution

The fourth proportional to 21,297.88, 31,920.90 and 9,607.96 is: 14,400.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,297.88 : 31,920.90 = 9,607.96 : x
  2. Step 2: Convert to fraction form
    21,297.88/31,920.90 = 9,607.96/x
  3. Step 3: Cross multiply
    21,297.88x = 31,920.90 × 9,607.96
  4. Step 4: Simplify right side
    21,297.88x = 306,694,730.36
  5. Step 5: Solve for x
    x = 306,694,730.36/21,297.88
  6. Step 6: Final answer
    x = 14,400.25

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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.