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Finding the Fourth Proportional to 13,756.01, 18,983.37 and 8,090.99

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Solution

The fourth proportional to 13,756.01, 18,983.37 and 8,090.99 is: 11,165.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.01 : 18,983.37 = 8,090.99 : x
  2. Step 2: Convert to fraction form
    13,756.01/18,983.37 = 8,090.99/x
  3. Step 3: Cross multiply
    13,756.01x = 18,983.37 × 8,090.99
  4. Step 4: Simplify right side
    13,756.01x = 153,594,273.95
  5. Step 5: Solve for x
    x = 153,594,273.95/13,756.01
  6. Step 6: Final answer
    x = 11,165.62

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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.