Home / 12,109.36-18,125.16-8,153.32

Finding the Fourth Proportional to 12,109.36, 18,125.16 and 8,153.32

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Solution

The fourth proportional to 12,109.36, 18,125.16 and 8,153.32 is: 12,203.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,109.36 : 18,125.16 = 8,153.32 : x
  2. Step 2: Convert to fraction form
    12,109.36/18,125.16 = 8,153.32/x
  3. Step 3: Cross multiply
    12,109.36x = 18,125.16 × 8,153.32
  4. Step 4: Simplify right side
    12,109.36x = 147,780,229.53
  5. Step 5: Solve for x
    x = 147,780,229.53/12,109.36
  6. Step 6: Final answer
    x = 12,203.80

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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.