Home / 11,164.39-15,403.70-7,187.81

Finding the Fourth Proportional to 11,164.39, 15,403.70 and 7,187.81

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Solution

The fourth proportional to 11,164.39, 15,403.70 and 7,187.81 is: 9,917.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,164.39 : 15,403.70 = 7,187.81 : x
  2. Step 2: Convert to fraction form
    11,164.39/15,403.70 = 7,187.81/x
  3. Step 3: Cross multiply
    11,164.39x = 15,403.70 × 7,187.81
  4. Step 4: Simplify right side
    11,164.39x = 110,718,809.85
  5. Step 5: Solve for x
    x = 110,718,809.85/11,164.39
  6. Step 6: Final answer
    x = 9,917.14

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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.