Home / 13,204.22-18,221.67-7,154.34

Finding the Fourth Proportional to 13,204.22, 18,221.67 and 7,154.34

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Solution

The fourth proportional to 13,204.22, 18,221.67 and 7,154.34 is: 9,872.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,204.22 : 18,221.67 = 7,154.34 : x
  2. Step 2: Convert to fraction form
    13,204.22/18,221.67 = 7,154.34/x
  3. Step 3: Cross multiply
    13,204.22x = 18,221.67 × 7,154.34
  4. Step 4: Simplify right side
    13,204.22x = 130,364,022.55
  5. Step 5: Solve for x
    x = 130,364,022.55/13,204.22
  6. Step 6: Final answer
    x = 9,872.91

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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.