Home / 13,909.30-19,194.73-7,621.70

Finding the Fourth Proportional to 13,909.30, 19,194.73 and 7,621.70

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Solution

The fourth proportional to 13,909.30, 19,194.73 and 7,621.70 is: 10,517.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.30 : 19,194.73 = 7,621.70 : x
  2. Step 2: Convert to fraction form
    13,909.30/19,194.73 = 7,621.70/x
  3. Step 3: Cross multiply
    13,909.30x = 19,194.73 × 7,621.70
  4. Step 4: Simplify right side
    13,909.30x = 146,296,473.64
  5. Step 5: Solve for x
    x = 146,296,473.64/13,909.30
  6. Step 6: Final answer
    x = 10,517.89

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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.