Home / 21,051.62-31,549.99-8,557.04

Finding the Fourth Proportional to 21,051.62, 31,549.99 and 8,557.04

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Solution

The fourth proportional to 21,051.62, 31,549.99 and 8,557.04 is: 12,824.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,051.62 : 31,549.99 = 8,557.04 : x
  2. Step 2: Convert to fraction form
    21,051.62/31,549.99 = 8,557.04/x
  3. Step 3: Cross multiply
    21,051.62x = 31,549.99 × 8,557.04
  4. Step 4: Simplify right side
    21,051.62x = 269,974,526.43
  5. Step 5: Solve for x
    x = 269,974,526.43/21,051.62
  6. Step 6: Final answer
    x = 12,824.41

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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.