Home / 13,909.14-19,193.55-7,940.00

Finding the Fourth Proportional to 13,909.14, 19,193.55 and 7,940.00

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Solution

The fourth proportional to 13,909.14, 19,193.55 and 7,940.00 is: 10,956.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.14 : 19,193.55 = 7,940.00 : x
  2. Step 2: Convert to fraction form
    13,909.14/19,193.55 = 7,940.00/x
  3. Step 3: Cross multiply
    13,909.14x = 19,193.55 × 7,940.00
  4. Step 4: Simplify right side
    13,909.14x = 152,396,691.03
  5. Step 5: Solve for x
    x = 152,396,691.03/13,909.14
  6. Step 6: Final answer
    x = 10,956.59

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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.