Home / 18,291.03-27,431.10-7,760.88

Finding the Fourth Proportional to 18,291.03, 27,431.10 and 7,760.88

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Solution

The fourth proportional to 18,291.03, 27,431.10 and 7,760.88 is: 11,639.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.03 : 27,431.10 = 7,760.88 : x
  2. Step 2: Convert to fraction form
    18,291.03/27,431.10 = 7,760.88/x
  3. Step 3: Cross multiply
    18,291.03x = 27,431.10 × 7,760.88
  4. Step 4: Simplify right side
    18,291.03x = 212,889,475.37
  5. Step 5: Solve for x
    x = 212,889,475.37/18,291.03
  6. Step 6: Final answer
    x = 11,639.01

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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.