Home / 13,909.32-19,194.57-7,621.29

Finding the Fourth Proportional to 13,909.32, 19,194.57 and 7,621.29

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Solution

The fourth proportional to 13,909.32, 19,194.57 and 7,621.29 is: 10,517.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.32 : 19,194.57 = 7,621.29 : x
  2. Step 2: Convert to fraction form
    13,909.32/19,194.57 = 7,621.29/x
  3. Step 3: Cross multiply
    13,909.32x = 19,194.57 × 7,621.29
  4. Step 4: Simplify right side
    13,909.32x = 146,287,384.40
  5. Step 5: Solve for x
    x = 146,287,384.40/13,909.32
  6. Step 6: Final answer
    x = 10,517.22

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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.