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Finding the Fourth Proportional to 14,956.95, 20,639.43 and 8,986.44

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Solution

The fourth proportional to 14,956.95, 20,639.43 and 8,986.44 is: 12,400.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,956.95 : 20,639.43 = 8,986.44 : x
  2. Step 2: Convert to fraction form
    14,956.95/20,639.43 = 8,986.44/x
  3. Step 3: Cross multiply
    14,956.95x = 20,639.43 × 8,986.44
  4. Step 4: Simplify right side
    14,956.95x = 185,474,999.33
  5. Step 5: Solve for x
    x = 185,474,999.33/14,956.95
  6. Step 6: Final answer
    x = 12,400.59

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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.