Home / 18,275.11-27,413.64-5,128.51

Finding the Fourth Proportional to 18,275.11, 27,413.64 and 5,128.51

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Solution

The fourth proportional to 18,275.11, 27,413.64 and 5,128.51 is: 7,693.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,275.11 : 27,413.64 = 5,128.51 : x
  2. Step 2: Convert to fraction form
    18,275.11/27,413.64 = 5,128.51/x
  3. Step 3: Cross multiply
    18,275.11x = 27,413.64 × 5,128.51
  4. Step 4: Simplify right side
    18,275.11x = 140,591,148.29
  5. Step 5: Solve for x
    x = 140,591,148.29/18,275.11
  6. Step 6: Final answer
    x = 7,693.04

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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.