Home / 13,909.26-19,194.78-7,621.64

Finding the Fourth Proportional to 13,909.26, 19,194.78 and 7,621.64

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Solution

The fourth proportional to 13,909.26, 19,194.78 and 7,621.64 is: 10,517.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.26 : 19,194.78 = 7,621.64 : x
  2. Step 2: Convert to fraction form
    13,909.26/19,194.78 = 7,621.64/x
  3. Step 3: Cross multiply
    13,909.26x = 19,194.78 × 7,621.64
  4. Step 4: Simplify right side
    13,909.26x = 146,295,703.04
  5. Step 5: Solve for x
    x = 146,295,703.04/13,909.26
  6. Step 6: Final answer
    x = 10,517.86

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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.