Home / 12,160.81-18,208.32-6,305.11

Finding the Fourth Proportional to 12,160.81, 18,208.32 and 6,305.11

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Solution

The fourth proportional to 12,160.81, 18,208.32 and 6,305.11 is: 9,440.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,160.81 : 18,208.32 = 6,305.11 : x
  2. Step 2: Convert to fraction form
    12,160.81/18,208.32 = 6,305.11/x
  3. Step 3: Cross multiply
    12,160.81x = 18,208.32 × 6,305.11
  4. Step 4: Simplify right side
    12,160.81x = 114,805,460.52
  5. Step 5: Solve for x
    x = 114,805,460.52/12,160.81
  6. Step 6: Final answer
    x = 9,440.61

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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.