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Finding the Fourth Proportional to 18,491.51, 27,737.19 and 4,640.51

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Solution

The fourth proportional to 18,491.51, 27,737.19 and 4,640.51 is: 6,960.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,491.51 : 27,737.19 = 4,640.51 : x
  2. Step 2: Convert to fraction form
    18,491.51/27,737.19 = 4,640.51/x
  3. Step 3: Cross multiply
    18,491.51x = 27,737.19 × 4,640.51
  4. Step 4: Simplify right side
    18,491.51x = 128,714,568.88
  5. Step 5: Solve for x
    x = 128,714,568.88/18,491.51
  6. Step 6: Final answer
    x = 6,960.74

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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.