Home / 18,520.34-25,558.68-10,136.84

Finding the Fourth Proportional to 18,520.34, 25,558.68 and 10,136.84

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Solution

The fourth proportional to 18,520.34, 25,558.68 and 10,136.84 is: 13,989.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.34 : 25,558.68 = 10,136.84 : x
  2. Step 2: Convert to fraction form
    18,520.34/25,558.68 = 10,136.84/x
  3. Step 3: Cross multiply
    18,520.34x = 25,558.68 × 10,136.84
  4. Step 4: Simplify right side
    18,520.34x = 259,084,249.77
  5. Step 5: Solve for x
    x = 259,084,249.77/18,520.34
  6. Step 6: Final answer
    x = 13,989.17

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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.