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Finding the Fourth Proportional to 21,593.58, 32,390.39 and 8,436.74

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Solution

The fourth proportional to 21,593.58, 32,390.39 and 8,436.74 is: 12,655.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,593.58 : 32,390.39 = 8,436.74 : x
  2. Step 2: Convert to fraction form
    21,593.58/32,390.39 = 8,436.74/x
  3. Step 3: Cross multiply
    21,593.58x = 32,390.39 × 8,436.74
  4. Step 4: Simplify right side
    21,593.58x = 273,269,094.79
  5. Step 5: Solve for x
    x = 273,269,094.79/21,593.58
  6. Step 6: Final answer
    x = 12,655.11

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.