Home / 18,231.45-27,330.99-7,130.34

Finding the Fourth Proportional to 18,231.45, 27,330.99 and 7,130.34

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Solution

The fourth proportional to 18,231.45, 27,330.99 and 7,130.34 is: 10,689.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.45 : 27,330.99 = 7,130.34 : x
  2. Step 2: Convert to fraction form
    18,231.45/27,330.99 = 7,130.34/x
  3. Step 3: Cross multiply
    18,231.45x = 27,330.99 × 7,130.34
  4. Step 4: Simplify right side
    18,231.45x = 194,879,251.24
  5. Step 5: Solve for x
    x = 194,879,251.24/18,231.45
  6. Step 6: Final answer
    x = 10,689.18

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1.5x scale

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.