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Finding the Fourth Proportional to 14,103.68, 19,463.84 and 7,815.92

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Solution

The fourth proportional to 14,103.68, 19,463.84 and 7,815.92 is: 10,786.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,103.68 : 19,463.84 = 7,815.92 : x
  2. Step 2: Convert to fraction form
    14,103.68/19,463.84 = 7,815.92/x
  3. Step 3: Cross multiply
    14,103.68x = 19,463.84 × 7,815.92
  4. Step 4: Simplify right side
    14,103.68x = 152,127,679.93
  5. Step 5: Solve for x
    x = 152,127,679.93/14,103.68
  6. Step 6: Final answer
    x = 10,786.39

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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.