Home / 18,213.12-27,320.70-5,065.20

Finding the Fourth Proportional to 18,213.12, 27,320.70 and 5,065.20

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Solution

The fourth proportional to 18,213.12, 27,320.70 and 5,065.20 is: 7,598.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.12 : 27,320.70 = 5,065.20 : x
  2. Step 2: Convert to fraction form
    18,213.12/27,320.70 = 5,065.20/x
  3. Step 3: Cross multiply
    18,213.12x = 27,320.70 × 5,065.20
  4. Step 4: Simplify right side
    18,213.12x = 138,384,809.64
  5. Step 5: Solve for x
    x = 138,384,809.64/18,213.12
  6. Step 6: Final answer
    x = 7,598.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.