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Finding the Fourth Proportional to 14,387.74, 19,855.48 and 8,100.34

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Solution

The fourth proportional to 14,387.74, 19,855.48 and 8,100.34 is: 11,178.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,387.74 : 19,855.48 = 8,100.34 : x
  2. Step 2: Convert to fraction form
    14,387.74/19,855.48 = 8,100.34/x
  3. Step 3: Cross multiply
    14,387.74x = 19,855.48 × 8,100.34
  4. Step 4: Simplify right side
    14,387.74x = 160,836,138.86
  5. Step 5: Solve for x
    x = 160,836,138.86/14,387.74
  6. Step 6: Final answer
    x = 11,178.69

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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.