Home / 15,456.66-21,329.91-8,742.03

Finding the Fourth Proportional to 15,456.66, 21,329.91 and 8,742.03

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Solution

The fourth proportional to 15,456.66, 21,329.91 and 8,742.03 is: 12,063.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.66 : 21,329.91 = 8,742.03 : x
  2. Step 2: Convert to fraction form
    15,456.66/21,329.91 = 8,742.03/x
  3. Step 3: Cross multiply
    15,456.66x = 21,329.91 × 8,742.03
  4. Step 4: Simplify right side
    15,456.66x = 186,466,713.12
  5. Step 5: Solve for x
    x = 186,466,713.12/15,456.66
  6. Step 6: Final answer
    x = 12,063.84

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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.