Home / 12,305.70-18,458.55-4,906.35

Finding the Fourth Proportional to 12,305.70, 18,458.55 and 4,906.35

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Solution

The fourth proportional to 12,305.70, 18,458.55 and 4,906.35 is: 7,359.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,305.70 : 18,458.55 = 4,906.35 : x
  2. Step 2: Convert to fraction form
    12,305.70/18,458.55 = 4,906.35/x
  3. Step 3: Cross multiply
    12,305.70x = 18,458.55 × 4,906.35
  4. Step 4: Simplify right side
    12,305.70x = 90,564,106.79
  5. Step 5: Solve for x
    x = 90,564,106.79/12,305.70
  6. Step 6: Final answer
    x = 7,359.53

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Double scale
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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.