Home / 13,149.69-18,148.32-8,370.12

Finding the Fourth Proportional to 13,149.69, 18,148.32 and 8,370.12

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Solution

The fourth proportional to 13,149.69, 18,148.32 and 8,370.12 is: 11,551.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.69 : 18,148.32 = 8,370.12 : x
  2. Step 2: Convert to fraction form
    13,149.69/18,148.32 = 8,370.12/x
  3. Step 3: Cross multiply
    13,149.69x = 18,148.32 × 8,370.12
  4. Step 4: Simplify right side
    13,149.69x = 151,903,616.20
  5. Step 5: Solve for x
    x = 151,903,616.20/13,149.69
  6. Step 6: Final answer
    x = 11,551.88

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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.