Home / 13,908.80-19,194.04-7,621.20

Finding the Fourth Proportional to 13,908.80, 19,194.04 and 7,621.20

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Solution

The fourth proportional to 13,908.80, 19,194.04 and 7,621.20 is: 10,517.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908.80 : 19,194.04 = 7,621.20 : x
  2. Step 2: Convert to fraction form
    13,908.80/19,194.04 = 7,621.20/x
  3. Step 3: Cross multiply
    13,908.80x = 19,194.04 × 7,621.20
  4. Step 4: Simplify right side
    13,908.80x = 146,281,617.65
  5. Step 5: Solve for x
    x = 146,281,617.65/13,908.80
  6. Step 6: Final answer
    x = 10,517.20

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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.