Home / 18,303.24-27,433.65-8,421.78

Finding the Fourth Proportional to 18,303.24, 27,433.65 and 8,421.78

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Solution

The fourth proportional to 18,303.24, 27,433.65 and 8,421.78 is: 12,622.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,303.24 : 27,433.65 = 8,421.78 : x
  2. Step 2: Convert to fraction form
    18,303.24/27,433.65 = 8,421.78/x
  3. Step 3: Cross multiply
    18,303.24x = 27,433.65 × 8,421.78
  4. Step 4: Simplify right side
    18,303.24x = 231,040,164.90
  5. Step 5: Solve for x
    x = 231,040,164.90/18,303.24
  6. Step 6: Final answer
    x = 12,622.91

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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.