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Finding the Fourth Proportional to 19,600.08, 29,399.98 and 7,913.12

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Solution

The fourth proportional to 19,600.08, 29,399.98 and 7,913.12 is: 11,869.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,600.08 : 29,399.98 = 7,913.12 : x
  2. Step 2: Convert to fraction form
    19,600.08/29,399.98 = 7,913.12/x
  3. Step 3: Cross multiply
    19,600.08x = 29,399.98 × 7,913.12
  4. Step 4: Simplify right side
    19,600.08x = 232,645,569.74
  5. Step 5: Solve for x
    x = 232,645,569.74/19,600.08
  6. Step 6: Final answer
    x = 11,869.62

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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.