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Finding the Fourth Proportional to 14,220.76, 19,629.70 and 9,375.88

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Solution

The fourth proportional to 14,220.76, 19,629.70 and 9,375.88 is: 12,942.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,220.76 : 19,629.70 = 9,375.88 : x
  2. Step 2: Convert to fraction form
    14,220.76/19,629.70 = 9,375.88/x
  3. Step 3: Cross multiply
    14,220.76x = 19,629.70 × 9,375.88
  4. Step 4: Simplify right side
    14,220.76x = 184,045,711.64
  5. Step 5: Solve for x
    x = 184,045,711.64/14,220.76
  6. Step 6: Final answer
    x = 12,942.04

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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.