Home / 13,149.43-18,135.93-8,434.15

Finding the Fourth Proportional to 13,149.43, 18,135.93 and 8,434.15

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Solution

The fourth proportional to 13,149.43, 18,135.93 and 8,434.15 is: 11,632.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.43 : 18,135.93 = 8,434.15 : x
  2. Step 2: Convert to fraction form
    13,149.43/18,135.93 = 8,434.15/x
  3. Step 3: Cross multiply
    13,149.43x = 18,135.93 × 8,434.15
  4. Step 4: Simplify right side
    13,149.43x = 152,961,154.01
  5. Step 5: Solve for x
    x = 152,961,154.01/13,149.43
  6. Step 6: Final answer
    x = 11,632.53

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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.