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Finding the Fourth Proportional to 14,380.72, 19,847.36 and 8,717.72

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Solution

The fourth proportional to 14,380.72, 19,847.36 and 8,717.72 is: 12,031.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,380.72 : 19,847.36 = 8,717.72 : x
  2. Step 2: Convert to fraction form
    14,380.72/19,847.36 = 8,717.72/x
  3. Step 3: Cross multiply
    14,380.72x = 19,847.36 × 8,717.72
  4. Step 4: Simplify right side
    14,380.72x = 173,023,727.22
  5. Step 5: Solve for x
    x = 173,023,727.22/14,380.72
  6. Step 6: Final answer
    x = 12,031.65

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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.