Home / 12,138.93-18,208.40-6,941.16

Finding the Fourth Proportional to 12,138.93, 18,208.40 and 6,941.16

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Solution

The fourth proportional to 12,138.93, 18,208.40 and 6,941.16 is: 10,411.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.93 : 18,208.40 = 6,941.16 : x
  2. Step 2: Convert to fraction form
    12,138.93/18,208.40 = 6,941.16/x
  3. Step 3: Cross multiply
    12,138.93x = 18,208.40 × 6,941.16
  4. Step 4: Simplify right side
    12,138.93x = 126,387,383.04
  5. Step 5: Solve for x
    x = 126,387,383.04/12,138.93
  6. Step 6: Final answer
    x = 10,411.74

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Similar ratio
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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.