Home / 18,121.79-27,190.52-9,807.68

Finding the Fourth Proportional to 18,121.79, 27,190.52 and 9,807.68

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Solution

The fourth proportional to 18,121.79, 27,190.52 and 9,807.68 is: 14,715.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.79 : 27,190.52 = 9,807.68 : x
  2. Step 2: Convert to fraction form
    18,121.79/27,190.52 = 9,807.68/x
  3. Step 3: Cross multiply
    18,121.79x = 27,190.52 × 9,807.68
  4. Step 4: Simplify right side
    18,121.79x = 266,675,836.17
  5. Step 5: Solve for x
    x = 266,675,836.17/18,121.79
  6. Step 6: Final answer
    x = 14,715.75

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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.