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Finding the Fourth Proportional to 12,998.72, 19,475.84 and 10,932.08

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Solution

The fourth proportional to 12,998.72, 19,475.84 and 10,932.08 is: 16,379.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,998.72 : 19,475.84 = 10,932.08 : x
  2. Step 2: Convert to fraction form
    12,998.72/19,475.84 = 10,932.08/x
  3. Step 3: Cross multiply
    12,998.72x = 19,475.84 × 10,932.08
  4. Step 4: Simplify right side
    12,998.72x = 212,911,440.95
  5. Step 5: Solve for x
    x = 212,911,440.95/12,998.72
  6. Step 6: Final answer
    x = 16,379.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.