Home / 21,185.06-31,767.48-7,848.90

Finding the Fourth Proportional to 21,185.06, 31,767.48 and 7,848.90

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Solution

The fourth proportional to 21,185.06, 31,767.48 and 7,848.90 is: 11,769.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.06 : 31,767.48 = 7,848.90 : x
  2. Step 2: Convert to fraction form
    21,185.06/31,767.48 = 7,848.90/x
  3. Step 3: Cross multiply
    21,185.06x = 31,767.48 × 7,848.90
  4. Step 4: Simplify right side
    21,185.06x = 249,339,773.77
  5. Step 5: Solve for x
    x = 249,339,773.77/21,185.06
  6. Step 6: Final answer
    x = 11,769.61

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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.