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Finding the Fourth Proportional to 19,600.72, 29,402.04 and 7,912.48

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Solution

The fourth proportional to 19,600.72, 29,402.04 and 7,912.48 is: 11,869.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,600.72 : 29,402.04 = 7,912.48 : x
  2. Step 2: Convert to fraction form
    19,600.72/29,402.04 = 7,912.48/x
  3. Step 3: Cross multiply
    19,600.72x = 29,402.04 × 7,912.48
  4. Step 4: Simplify right side
    19,600.72x = 232,643,053.46
  5. Step 5: Solve for x
    x = 232,643,053.46/19,600.72
  6. Step 6: Final answer
    x = 11,869.11

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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.