Home / 13,439.04-18,544.62-7,772.88

Finding the Fourth Proportional to 13,439.04, 18,544.62 and 7,772.88

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Solution

The fourth proportional to 13,439.04, 18,544.62 and 7,772.88 is: 10,725.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.04 : 18,544.62 = 7,772.88 : x
  2. Step 2: Convert to fraction form
    13,439.04/18,544.62 = 7,772.88/x
  3. Step 3: Cross multiply
    13,439.04x = 18,544.62 × 7,772.88
  4. Step 4: Simplify right side
    13,439.04x = 144,145,105.91
  5. Step 5: Solve for x
    x = 144,145,105.91/13,439.04
  6. Step 6: Final answer
    x = 10,725.85

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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.