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Finding the Fourth Proportional to 18,684.10, 27,995.00 and 13,411.20

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Solution

The fourth proportional to 18,684.10, 27,995.00 and 13,411.20 is: 20,094.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684.10 : 27,995.00 = 13,411.20 : x
  2. Step 2: Convert to fraction form
    18,684.10/27,995.00 = 13,411.20/x
  3. Step 3: Cross multiply
    18,684.10x = 27,995.00 × 13,411.20
  4. Step 4: Simplify right side
    18,684.10x = 375,446,581.93
  5. Step 5: Solve for x
    x = 375,446,581.93/18,684.10
  6. Step 6: Final answer
    x = 20,094.44

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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.