Home / 11,128.92-15,356.25-6,412.38

Finding the Fourth Proportional to 11,128.92, 15,356.25 and 6,412.38

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Solution

The fourth proportional to 11,128.92, 15,356.25 and 6,412.38 is: 8,848.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.92 : 15,356.25 = 6,412.38 : x
  2. Step 2: Convert to fraction form
    11,128.92/15,356.25 = 6,412.38/x
  3. Step 3: Cross multiply
    11,128.92x = 15,356.25 × 6,412.38
  4. Step 4: Simplify right side
    11,128.92x = 98,470,110.38
  5. Step 5: Solve for x
    x = 98,470,110.38/11,128.92
  6. Step 6: Final answer
    x = 8,848.13

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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.