Home / 13,084.20-18,056.16-7,115.88

Finding the Fourth Proportional to 13,084.20, 18,056.16 and 7,115.88

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Solution

The fourth proportional to 13,084.20, 18,056.16 and 7,115.88 is: 9,819.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,084.20 : 18,056.16 = 7,115.88 : x
  2. Step 2: Convert to fraction form
    13,084.20/18,056.16 = 7,115.88/x
  3. Step 3: Cross multiply
    13,084.20x = 18,056.16 × 7,115.88
  4. Step 4: Simplify right side
    13,084.20x = 128,485,467.82
  5. Step 5: Solve for x
    x = 128,485,467.82/13,084.20
  6. Step 6: Final answer
    x = 9,819.89

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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.