Home / 18,228.05-27,342.09-10,431.40

Finding the Fourth Proportional to 18,228.05, 27,342.09 and 10,431.40

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Solution

The fourth proportional to 18,228.05, 27,342.09 and 10,431.40 is: 15,647.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,228.05 : 27,342.09 = 10,431.40 : x
  2. Step 2: Convert to fraction form
    18,228.05/27,342.09 = 10,431.40/x
  3. Step 3: Cross multiply
    18,228.05x = 27,342.09 × 10,431.40
  4. Step 4: Simplify right side
    18,228.05x = 285,216,209.27
  5. Step 5: Solve for x
    x = 285,216,209.27/18,228.05
  6. Step 6: Final answer
    x = 15,647.10

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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.