Home / 22,122.77-30,529.40-12,186.77

Finding the Fourth Proportional to 22,122.77, 30,529.40 and 12,186.77

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Solution

The fourth proportional to 22,122.77, 30,529.40 and 12,186.77 is: 16,817.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,122.77 : 30,529.40 = 12,186.77 : x
  2. Step 2: Convert to fraction form
    22,122.77/30,529.40 = 12,186.77/x
  3. Step 3: Cross multiply
    22,122.77x = 30,529.40 × 12,186.77
  4. Step 4: Simplify right side
    22,122.77x = 372,054,653.86
  5. Step 5: Solve for x
    x = 372,054,653.86/22,122.77
  6. Step 6: Final answer
    x = 16,817.73

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Half scale
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Double scale
Find fourth proportional to 22,123.77, 30,530.78 and 12,187.77
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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.