Home / 13,322.76-18,392.44-8,609.72

Finding the Fourth Proportional to 13,322.76, 18,392.44 and 8,609.72

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Solution

The fourth proportional to 13,322.76, 18,392.44 and 8,609.72 is: 11,885.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,322.76 : 18,392.44 = 8,609.72 : x
  2. Step 2: Convert to fraction form
    13,322.76/18,392.44 = 8,609.72/x
  3. Step 3: Cross multiply
    13,322.76x = 18,392.44 × 8,609.72
  4. Step 4: Simplify right side
    13,322.76x = 158,353,758.52
  5. Step 5: Solve for x
    x = 158,353,758.52/13,322.76
  6. Step 6: Final answer
    x = 11,885.96

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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.