Home / 13,771.08-18,955.08-11,508.12

Finding the Fourth Proportional to 13,771.08, 18,955.08 and 11,508.12

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Solution

The fourth proportional to 13,771.08, 18,955.08 and 11,508.12 is: 15,840.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771.08 : 18,955.08 = 11,508.12 : x
  2. Step 2: Convert to fraction form
    13,771.08/18,955.08 = 11,508.12/x
  3. Step 3: Cross multiply
    13,771.08x = 18,955.08 × 11,508.12
  4. Step 4: Simplify right side
    13,771.08x = 218,137,335.25
  5. Step 5: Solve for x
    x = 218,137,335.25/13,771.08
  6. Step 6: Final answer
    x = 15,840.25

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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.