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Finding the Fourth Proportional to 12,999.72, 19,477.34 and 10,933.08

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Solution

The fourth proportional to 12,999.72, 19,477.34 and 10,933.08 is: 16,380.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999.72 : 19,477.34 = 10,933.08 : x
  2. Step 2: Convert to fraction form
    12,999.72/19,477.34 = 10,933.08/x
  3. Step 3: Cross multiply
    12,999.72x = 19,477.34 × 10,933.08
  4. Step 4: Simplify right side
    12,999.72x = 212,947,316.41
  5. Step 5: Solve for x
    x = 212,947,316.41/12,999.72
  6. Step 6: Final answer
    x = 16,380.92

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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.