Home / 12,218.17-18,317.00-8,509.45

Finding the Fourth Proportional to 12,218.17, 18,317.00 and 8,509.45

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Solution

The fourth proportional to 12,218.17, 18,317.00 and 8,509.45 is: 12,757.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.17 : 18,317.00 = 8,509.45 : x
  2. Step 2: Convert to fraction form
    12,218.17/18,317.00 = 8,509.45/x
  3. Step 3: Cross multiply
    12,218.17x = 18,317.00 × 8,509.45
  4. Step 4: Simplify right side
    12,218.17x = 155,867,553.10
  5. Step 5: Solve for x
    x = 155,867,553.10/12,218.17
  6. Step 6: Final answer
    x = 12,757.03

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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.