Home / 13,940.20-19,187.40-12,611.08

Finding the Fourth Proportional to 13,940.20, 19,187.40 and 12,611.08

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Solution

The fourth proportional to 13,940.20, 19,187.40 and 12,611.08 is: 17,357.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.20 : 19,187.40 = 12,611.08 : x
  2. Step 2: Convert to fraction form
    13,940.20/19,187.40 = 12,611.08/x
  3. Step 3: Cross multiply
    13,940.20x = 19,187.40 × 12,611.08
  4. Step 4: Simplify right side
    13,940.20x = 241,973,836.39
  5. Step 5: Solve for x
    x = 241,973,836.39/13,940.20
  6. Step 6: Final answer
    x = 17,357.99

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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.