Home / 13,713.30-18,891.93-11,307.60

Finding the Fourth Proportional to 13,713.30, 18,891.93 and 11,307.60

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Solution

The fourth proportional to 13,713.30, 18,891.93 and 11,307.60 is: 15,577.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,713.30 : 18,891.93 = 11,307.60 : x
  2. Step 2: Convert to fraction form
    13,713.30/18,891.93 = 11,307.60/x
  3. Step 3: Cross multiply
    13,713.30x = 18,891.93 × 11,307.60
  4. Step 4: Simplify right side
    13,713.30x = 213,622,387.67
  5. Step 5: Solve for x
    x = 213,622,387.67/13,713.30
  6. Step 6: Final answer
    x = 15,577.75

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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.