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Finding the Fourth Proportional to 14,950.32, 20,638.44 and 8,661.48

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Solution

The fourth proportional to 14,950.32, 20,638.44 and 8,661.48 is: 11,956.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,950.32 : 20,638.44 = 8,661.48 : x
  2. Step 2: Convert to fraction form
    14,950.32/20,638.44 = 8,661.48/x
  3. Step 3: Cross multiply
    14,950.32x = 20,638.44 × 8,661.48
  4. Step 4: Simplify right side
    14,950.32x = 178,759,435.29
  5. Step 5: Solve for x
    x = 178,759,435.29/14,950.32
  6. Step 6: Final answer
    x = 11,956.90

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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.