Home / 11,161.42-15,392.75-8,335.64

Finding the Fourth Proportional to 11,161.42, 15,392.75 and 8,335.64

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Solution

The fourth proportional to 11,161.42, 15,392.75 and 8,335.64 is: 11,495.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.42 : 15,392.75 = 8,335.64 : x
  2. Step 2: Convert to fraction form
    11,161.42/15,392.75 = 8,335.64/x
  3. Step 3: Cross multiply
    11,161.42x = 15,392.75 × 8,335.64
  4. Step 4: Simplify right side
    11,161.42x = 128,308,419.41
  5. Step 5: Solve for x
    x = 128,308,419.41/11,161.42
  6. Step 6: Final answer
    x = 11,495.71

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Half scale
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Double scale
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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.