Home / 13,634.83-18,811.53-11,112.60

Finding the Fourth Proportional to 13,634.83, 18,811.53 and 11,112.60

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Solution

The fourth proportional to 13,634.83, 18,811.53 and 11,112.60 is: 15,331.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,634.83 : 18,811.53 = 11,112.60 : x
  2. Step 2: Convert to fraction form
    13,634.83/18,811.53 = 11,112.60/x
  3. Step 3: Cross multiply
    13,634.83x = 18,811.53 × 11,112.60
  4. Step 4: Simplify right side
    13,634.83x = 209,045,036.06
  5. Step 5: Solve for x
    x = 209,045,036.06/13,634.83
  6. Step 6: Final answer
    x = 15,331.70

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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.