Home / 12,430.38-18,645.54-3,665.28

Finding the Fourth Proportional to 12,430.38, 18,645.54 and 3,665.28

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Solution

The fourth proportional to 12,430.38, 18,645.54 and 3,665.28 is: 5,497.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.38 : 18,645.54 = 3,665.28 : x
  2. Step 2: Convert to fraction form
    12,430.38/18,645.54 = 3,665.28/x
  3. Step 3: Cross multiply
    12,430.38x = 18,645.54 × 3,665.28
  4. Step 4: Simplify right side
    12,430.38x = 68,341,124.85
  5. Step 5: Solve for x
    x = 68,341,124.85/12,430.38
  6. Step 6: Final answer
    x = 5,497.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.