Home / 15,379.17-21,234.63-9,418.97

Finding the Fourth Proportional to 15,379.17, 21,234.63 and 9,418.97

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Solution

The fourth proportional to 15,379.17, 21,234.63 and 9,418.97 is: 13,005.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,379.17 : 21,234.63 = 9,418.97 : x
  2. Step 2: Convert to fraction form
    15,379.17/21,234.63 = 9,418.97/x
  3. Step 3: Cross multiply
    15,379.17x = 21,234.63 × 9,418.97
  4. Step 4: Simplify right side
    15,379.17x = 200,008,236.76
  5. Step 5: Solve for x
    x = 200,008,236.76/15,379.17
  6. Step 6: Final answer
    x = 13,005.14

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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.