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Finding the Fourth Proportional to 18,293.10, 27,445.41 and 10,905.90

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Solution

The fourth proportional to 18,293.10, 27,445.41 and 10,905.90 is: 16,362.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,293.10 : 27,445.41 = 10,905.90 : x
  2. Step 2: Convert to fraction form
    18,293.10/27,445.41 = 10,905.90/x
  3. Step 3: Cross multiply
    18,293.10x = 27,445.41 × 10,905.90
  4. Step 4: Simplify right side
    18,293.10x = 299,316,896.92
  5. Step 5: Solve for x
    x = 299,316,896.92/18,293.10
  6. Step 6: Final answer
    x = 16,362.28

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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.