Home / 13,701.52-18,890.88-11,181.07

Finding the Fourth Proportional to 13,701.52, 18,890.88 and 11,181.07

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Solution

The fourth proportional to 13,701.52, 18,890.88 and 11,181.07 is: 15,415.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,701.52 : 18,890.88 = 11,181.07 : x
  2. Step 2: Convert to fraction form
    13,701.52/18,890.88 = 11,181.07/x
  3. Step 3: Cross multiply
    13,701.52x = 18,890.88 × 11,181.07
  4. Step 4: Simplify right side
    13,701.52x = 211,220,251.64
  5. Step 5: Solve for x
    x = 211,220,251.64/13,701.52
  6. Step 6: Final answer
    x = 15,415.83

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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.