Home / 21,374.72-29,497.20-12,427.46

Finding the Fourth Proportional to 21,374.72, 29,497.20 and 12,427.46

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Solution

The fourth proportional to 21,374.72, 29,497.20 and 12,427.46 is: 17,149.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,374.72 : 29,497.20 = 12,427.46 : x
  2. Step 2: Convert to fraction form
    21,374.72/29,497.20 = 12,427.46/x
  3. Step 3: Cross multiply
    21,374.72x = 29,497.20 × 12,427.46
  4. Step 4: Simplify right side
    21,374.72x = 366,575,273.11
  5. Step 5: Solve for x
    x = 366,575,273.11/21,374.72
  6. Step 6: Final answer
    x = 17,149.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.