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Finding the Fourth Proportional to 15,393.56, 23,076.36 and 7,989.35

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Solution

The fourth proportional to 15,393.56, 23,076.36 and 7,989.35 is: 11,976.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,393.56 : 23,076.36 = 7,989.35 : x
  2. Step 2: Convert to fraction form
    15,393.56/23,076.36 = 7,989.35/x
  3. Step 3: Cross multiply
    15,393.56x = 23,076.36 × 7,989.35
  4. Step 4: Simplify right side
    15,393.56x = 184,365,001.38
  5. Step 5: Solve for x
    x = 184,365,001.38/15,393.56
  6. Step 6: Final answer
    x = 11,976.77

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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.