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Finding the Fourth Proportional to 15,038.06, 20,754.06 and 8,664.89

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Solution

The fourth proportional to 15,038.06, 20,754.06 and 8,664.89 is: 11,958.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,038.06 : 20,754.06 = 8,664.89 : x
  2. Step 2: Convert to fraction form
    15,038.06/20,754.06 = 8,664.89/x
  3. Step 3: Cross multiply
    15,038.06x = 20,754.06 × 8,664.89
  4. Step 4: Simplify right side
    15,038.06x = 179,831,576.43
  5. Step 5: Solve for x
    x = 179,831,576.43/15,038.06
  6. Step 6: Final answer
    x = 11,958.43

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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.