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Finding the Fourth Proportional to 18,772.05, 25,901.04 and 12,816.12

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Solution

The fourth proportional to 18,772.05, 25,901.04 and 12,816.12 is: 17,683.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.05 : 25,901.04 = 12,816.12 : x
  2. Step 2: Convert to fraction form
    18,772.05/25,901.04 = 12,816.12/x
  3. Step 3: Cross multiply
    18,772.05x = 25,901.04 × 12,816.12
  4. Step 4: Simplify right side
    18,772.05x = 331,950,836.76
  5. Step 5: Solve for x
    x = 331,950,836.76/18,772.05
  6. Step 6: Final answer
    x = 17,683.25

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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.