Home / 11,128.71-15,358.36-6,413.30

Finding the Fourth Proportional to 11,128.71, 15,358.36 and 6,413.30

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Solution

The fourth proportional to 11,128.71, 15,358.36 and 6,413.30 is: 8,850.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.71 : 15,358.36 = 6,413.30 : x
  2. Step 2: Convert to fraction form
    11,128.71/15,358.36 = 6,413.30/x
  3. Step 3: Cross multiply
    11,128.71x = 15,358.36 × 6,413.30
  4. Step 4: Simplify right side
    11,128.71x = 98,497,693.40
  5. Step 5: Solve for x
    x = 98,497,693.40/11,128.71
  6. Step 6: Final answer
    x = 8,850.77

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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.