Home / 13,515.12-18,649.80-7,546.32

Finding the Fourth Proportional to 13,515.12, 18,649.80 and 7,546.32

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Solution

The fourth proportional to 13,515.12, 18,649.80 and 7,546.32 is: 10,413.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.12 : 18,649.80 = 7,546.32 : x
  2. Step 2: Convert to fraction form
    13,515.12/18,649.80 = 7,546.32/x
  3. Step 3: Cross multiply
    13,515.12x = 18,649.80 × 7,546.32
  4. Step 4: Simplify right side
    13,515.12x = 140,737,358.74
  5. Step 5: Solve for x
    x = 140,737,358.74/13,515.12
  6. Step 6: Final answer
    x = 10,413.33

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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.