Home / 21,374.56-29,496.75-11,815.09

Finding the Fourth Proportional to 21,374.56, 29,496.75 and 11,815.09

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Solution

The fourth proportional to 21,374.56, 29,496.75 and 11,815.09 is: 16,304.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,374.56 : 29,496.75 = 11,815.09 : x
  2. Step 2: Convert to fraction form
    21,374.56/29,496.75 = 11,815.09/x
  3. Step 3: Cross multiply
    21,374.56x = 29,496.75 × 11,815.09
  4. Step 4: Simplify right side
    21,374.56x = 348,506,755.96
  5. Step 5: Solve for x
    x = 348,506,755.96/21,374.56
  6. Step 6: Final answer
    x = 16,304.75

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1.5x scale

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.