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Finding the Fourth Proportional to 14,375.70, 19,840.44 and 8,712.72

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Solution

The fourth proportional to 14,375.70, 19,840.44 and 8,712.72 is: 12,024.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,375.70 : 19,840.44 = 8,712.72 : x
  2. Step 2: Convert to fraction form
    14,375.70/19,840.44 = 8,712.72/x
  3. Step 3: Cross multiply
    14,375.70x = 19,840.44 × 8,712.72
  4. Step 4: Simplify right side
    14,375.70x = 172,864,198.40
  5. Step 5: Solve for x
    x = 172,864,198.40/14,375.70
  6. Step 6: Final answer
    x = 12,024.75

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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.