Home / 21,250.88-31,872.72-5,670.08

Finding the Fourth Proportional to 21,250.88, 31,872.72 and 5,670.08

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Solution

The fourth proportional to 21,250.88, 31,872.72 and 5,670.08 is: 8,504.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.88 : 31,872.72 = 5,670.08 : x
  2. Step 2: Convert to fraction form
    21,250.88/31,872.72 = 5,670.08/x
  3. Step 3: Cross multiply
    21,250.88x = 31,872.72 × 5,670.08
  4. Step 4: Simplify right side
    21,250.88x = 180,720,872.22
  5. Step 5: Solve for x
    x = 180,720,872.22/21,250.88
  6. Step 6: Final answer
    x = 8,504.16

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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.