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Finding the Fourth Proportional to 18,693.02, 27,999.32 and 8,817.50

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Solution

The fourth proportional to 18,693.02, 27,999.32 and 8,817.50 is: 13,207.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,693.02 : 27,999.32 = 8,817.50 : x
  2. Step 2: Convert to fraction form
    18,693.02/27,999.32 = 8,817.50/x
  3. Step 3: Cross multiply
    18,693.02x = 27,999.32 × 8,817.50
  4. Step 4: Simplify right side
    18,693.02x = 246,884,004.10
  5. Step 5: Solve for x
    x = 246,884,004.10/18,693.02
  6. Step 6: Final answer
    x = 13,207.28

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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.