Home / 12,201.15-18,287.61-5,613.51

Finding the Fourth Proportional to 12,201.15, 18,287.61 and 5,613.51

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Solution

The fourth proportional to 12,201.15, 18,287.61 and 5,613.51 is: 8,413.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,201.15 : 18,287.61 = 5,613.51 : x
  2. Step 2: Convert to fraction form
    12,201.15/18,287.61 = 5,613.51/x
  3. Step 3: Cross multiply
    12,201.15x = 18,287.61 × 5,613.51
  4. Step 4: Simplify right side
    12,201.15x = 102,657,681.61
  5. Step 5: Solve for x
    x = 102,657,681.61/12,201.15
  6. Step 6: Final answer
    x = 8,413.77

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1.5x scale

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.