Home / 13,245.66-18,295.20-9,903.33

Finding the Fourth Proportional to 13,245.66, 18,295.20 and 9,903.33

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Solution

The fourth proportional to 13,245.66, 18,295.20 and 9,903.33 is: 13,678.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.66 : 18,295.20 = 9,903.33 : x
  2. Step 2: Convert to fraction form
    13,245.66/18,295.20 = 9,903.33/x
  3. Step 3: Cross multiply
    13,245.66x = 18,295.20 × 9,903.33
  4. Step 4: Simplify right side
    13,245.66x = 181,183,403.02
  5. Step 5: Solve for x
    x = 181,183,403.02/13,245.66
  6. Step 6: Final answer
    x = 13,678.70

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.