Home / 15,174-20,939.91-8,460.18

Finding the Fourth Proportional to 15,174, 20,939.91 and 8,460.18

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Solution

The fourth proportional to 15,174, 20,939.91 and 8,460.18 is: 11,674.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,174 : 20,939.91 = 8,460.18 : x
  2. Step 2: Convert to fraction form
    15,174/20,939.91 = 8,460.18/x
  3. Step 3: Cross multiply
    15,174x = 20,939.91 × 8,460.18
  4. Step 4: Simplify right side
    15,174x = 177,155,407.78
  5. Step 5: Solve for x
    x = 177,155,407.78/15,174
  6. Step 6: Final answer
    x = 11,674.93

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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.