Home / 13,135.18-18,126.39-7,546.18

Finding the Fourth Proportional to 13,135.18, 18,126.39 and 7,546.18

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Solution

The fourth proportional to 13,135.18, 18,126.39 and 7,546.18 is: 10,413.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.18 : 18,126.39 = 7,546.18 : x
  2. Step 2: Convert to fraction form
    13,135.18/18,126.39 = 7,546.18/x
  3. Step 3: Cross multiply
    13,135.18x = 18,126.39 × 7,546.18
  4. Step 4: Simplify right side
    13,135.18x = 136,785,001.69
  5. Step 5: Solve for x
    x = 136,785,001.69/13,135.18
  6. Step 6: Final answer
    x = 10,413.64

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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.