Home / 12,125.39-18,149.61-7,955.51

Finding the Fourth Proportional to 12,125.39, 18,149.61 and 7,955.51

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Solution

The fourth proportional to 12,125.39, 18,149.61 and 7,955.51 is: 11,908.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.39 : 18,149.61 = 7,955.51 : x
  2. Step 2: Convert to fraction form
    12,125.39/18,149.61 = 7,955.51/x
  3. Step 3: Cross multiply
    12,125.39x = 18,149.61 × 7,955.51
  4. Step 4: Simplify right side
    12,125.39x = 144,389,403.85
  5. Step 5: Solve for x
    x = 144,389,403.85/12,125.39
  6. Step 6: Final answer
    x = 11,908.02

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Double scale
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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.