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Finding the Fourth Proportional to 18,857.01, 26,024.72 and 12,057.20

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Solution

The fourth proportional to 18,857.01, 26,024.72 and 12,057.20 is: 16,640.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,857.01 : 26,024.72 = 12,057.20 : x
  2. Step 2: Convert to fraction form
    18,857.01/26,024.72 = 12,057.20/x
  3. Step 3: Cross multiply
    18,857.01x = 26,024.72 × 12,057.20
  4. Step 4: Simplify right side
    18,857.01x = 313,785,063.57
  5. Step 5: Solve for x
    x = 313,785,063.57/18,857.01
  6. Step 6: Final answer
    x = 16,640.23

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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.