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Finding the Fourth Proportional to 14,203.72, 19,600.78 and 8,235.04

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Solution

The fourth proportional to 14,203.72, 19,600.78 and 8,235.04 is: 11,364.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,203.72 : 19,600.78 = 8,235.04 : x
  2. Step 2: Convert to fraction form
    14,203.72/19,600.78 = 8,235.04/x
  3. Step 3: Cross multiply
    14,203.72x = 19,600.78 × 8,235.04
  4. Step 4: Simplify right side
    14,203.72x = 161,413,207.33
  5. Step 5: Solve for x
    x = 161,413,207.33/14,203.72
  6. Step 6: Final answer
    x = 11,364.15

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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.