Home / 15,327.14-21,151.82-8,612.36

Finding the Fourth Proportional to 15,327.14, 21,151.82 and 8,612.36

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Solution

The fourth proportional to 15,327.14, 21,151.82 and 8,612.36 is: 11,885.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,327.14 : 21,151.82 = 8,612.36 : x
  2. Step 2: Convert to fraction form
    15,327.14/21,151.82 = 8,612.36/x
  3. Step 3: Cross multiply
    15,327.14x = 21,151.82 × 8,612.36
  4. Step 4: Simplify right side
    15,327.14x = 182,167,083.59
  5. Step 5: Solve for x
    x = 182,167,083.59/15,327.14
  6. Step 6: Final answer
    x = 11,885.27

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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.