Home / 21,787.22-32,664.90-6,987.71

Finding the Fourth Proportional to 21,787.22, 32,664.90 and 6,987.71

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Solution

The fourth proportional to 21,787.22, 32,664.90 and 6,987.71 is: 10,476.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,787.22 : 32,664.90 = 6,987.71 : x
  2. Step 2: Convert to fraction form
    21,787.22/32,664.90 = 6,987.71/x
  3. Step 3: Cross multiply
    21,787.22x = 32,664.90 × 6,987.71
  4. Step 4: Simplify right side
    21,787.22x = 228,252,848.38
  5. Step 5: Solve for x
    x = 228,252,848.38/21,787.22
  6. Step 6: Final answer
    x = 10,476.46

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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.