Home / 12,218.05-18,285.54-7,541.02

Finding the Fourth Proportional to 12,218.05, 18,285.54 and 7,541.02

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Solution

The fourth proportional to 12,218.05, 18,285.54 and 7,541.02 is: 11,285.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.05 : 18,285.54 = 7,541.02 : x
  2. Step 2: Convert to fraction form
    12,218.05/18,285.54 = 7,541.02/x
  3. Step 3: Cross multiply
    12,218.05x = 18,285.54 × 7,541.02
  4. Step 4: Simplify right side
    12,218.05x = 137,891,622.85
  5. Step 5: Solve for x
    x = 137,891,622.85/12,218.05
  6. Step 6: Final answer
    x = 11,285.89

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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.