Home / 21,307.64-31,961.44-5,725.27

Finding the Fourth Proportional to 21,307.64, 31,961.44 and 5,725.27

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Solution

The fourth proportional to 21,307.64, 31,961.44 and 5,725.27 is: 8,587.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.64 : 31,961.44 = 5,725.27 : x
  2. Step 2: Convert to fraction form
    21,307.64/31,961.44 = 5,725.27/x
  3. Step 3: Cross multiply
    21,307.64x = 31,961.44 × 5,725.27
  4. Step 4: Simplify right side
    21,307.64x = 182,987,779.37
  5. Step 5: Solve for x
    x = 182,987,779.37/21,307.64
  6. Step 6: Final answer
    x = 8,587.89

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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.