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Finding the Fourth Proportional to 18,661.10, 27,994.24 and 6,813.32

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Solution

The fourth proportional to 18,661.10, 27,994.24 and 6,813.32 is: 10,220.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,661.10 : 27,994.24 = 6,813.32 : x
  2. Step 2: Convert to fraction form
    18,661.10/27,994.24 = 6,813.32/x
  3. Step 3: Cross multiply
    18,661.10x = 27,994.24 × 6,813.32
  4. Step 4: Simplify right side
    18,661.10x = 190,733,715.28
  5. Step 5: Solve for x
    x = 190,733,715.28/18,661.10
  6. Step 6: Final answer
    x = 10,220.93

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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.