Home / 11,190.88-15,440.28-7,214.32

Finding the Fourth Proportional to 11,190.88, 15,440.28 and 7,214.32

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Solution

The fourth proportional to 11,190.88, 15,440.28 and 7,214.32 is: 9,953.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,190.88 : 15,440.28 = 7,214.32 : x
  2. Step 2: Convert to fraction form
    11,190.88/15,440.28 = 7,214.32/x
  3. Step 3: Cross multiply
    11,190.88x = 15,440.28 × 7,214.32
  4. Step 4: Simplify right side
    11,190.88x = 111,391,120.81
  5. Step 5: Solve for x
    x = 111,391,120.81/11,190.88
  6. Step 6: Final answer
    x = 9,953.74

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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.