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Finding the Fourth Proportional to 15,027.48, 20,739.47 and 8,654.28

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Solution

The fourth proportional to 15,027.48, 20,739.47 and 8,654.28 is: 11,943.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.48 : 20,739.47 = 8,654.28 : x
  2. Step 2: Convert to fraction form
    15,027.48/20,739.47 = 8,654.28/x
  3. Step 3: Cross multiply
    15,027.48x = 20,739.47 × 8,654.28
  4. Step 4: Simplify right side
    15,027.48x = 179,485,202.07
  5. Step 5: Solve for x
    x = 179,485,202.07/15,027.48
  6. Step 6: Final answer
    x = 11,943.80

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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.