Home / 13,501.08-18,620.94-11,990.16

Finding the Fourth Proportional to 13,501.08, 18,620.94 and 11,990.16

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Solution

The fourth proportional to 13,501.08, 18,620.94 and 11,990.16 is: 16,537.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,501.08 : 18,620.94 = 11,990.16 : x
  2. Step 2: Convert to fraction form
    13,501.08/18,620.94 = 11,990.16/x
  3. Step 3: Cross multiply
    13,501.08x = 18,620.94 × 11,990.16
  4. Step 4: Simplify right side
    13,501.08x = 223,268,049.95
  5. Step 5: Solve for x
    x = 223,268,049.95/13,501.08
  6. Step 6: Final answer
    x = 16,537.05

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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.