Home / 12,153.84-18,230.76-9,384.54

Finding the Fourth Proportional to 12,153.84, 18,230.76 and 9,384.54

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Solution

The fourth proportional to 12,153.84, 18,230.76 and 9,384.54 is: 14,076.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,153.84 : 18,230.76 = 9,384.54 : x
  2. Step 2: Convert to fraction form
    12,153.84/18,230.76 = 9,384.54/x
  3. Step 3: Cross multiply
    12,153.84x = 18,230.76 × 9,384.54
  4. Step 4: Simplify right side
    12,153.84x = 171,087,296.45
  5. Step 5: Solve for x
    x = 171,087,296.45/12,153.84
  6. Step 6: Final answer
    x = 14,076.81

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