Home / 13,057.72-18,021.18-7,394.80

Finding the Fourth Proportional to 13,057.72, 18,021.18 and 7,394.80

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Solution

The fourth proportional to 13,057.72, 18,021.18 and 7,394.80 is: 10,205.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,057.72 : 18,021.18 = 7,394.80 : x
  2. Step 2: Convert to fraction form
    13,057.72/18,021.18 = 7,394.80/x
  3. Step 3: Cross multiply
    13,057.72x = 18,021.18 × 7,394.80
  4. Step 4: Simplify right side
    13,057.72x = 133,263,021.86
  5. Step 5: Solve for x
    x = 133,263,021.86/13,057.72
  6. Step 6: Final answer
    x = 10,205.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.