Home / 18,836.10-28,253.28-7,740.06

Finding the Fourth Proportional to 18,836.10, 28,253.28 and 7,740.06

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Solution

The fourth proportional to 18,836.10, 28,253.28 and 7,740.06 is: 11,609.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,836.10 : 28,253.28 = 7,740.06 : x
  2. Step 2: Convert to fraction form
    18,836.10/28,253.28 = 7,740.06/x
  3. Step 3: Cross multiply
    18,836.10x = 28,253.28 × 7,740.06
  4. Step 4: Simplify right side
    18,836.10x = 218,682,082.40
  5. Step 5: Solve for x
    x = 218,682,082.40/18,836.10
  6. Step 6: Final answer
    x = 11,609.73

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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.