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Finding the Fourth Proportional to 21,417.58, 32,127.99 and 6,627.99

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Solution

The fourth proportional to 21,417.58, 32,127.99 and 6,627.99 is: 9,942.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,417.58 : 32,127.99 = 6,627.99 : x
  2. Step 2: Convert to fraction form
    21,417.58/32,127.99 = 6,627.99/x
  3. Step 3: Cross multiply
    21,417.58x = 32,127.99 × 6,627.99
  4. Step 4: Simplify right side
    21,417.58x = 212,943,996.44
  5. Step 5: Solve for x
    x = 212,943,996.44/21,417.58
  6. Step 6: Final answer
    x = 9,942.49

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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.