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Finding the Fourth Proportional to 14,238.92, 19,647.96 and 7,951.16

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Solution

The fourth proportional to 14,238.92, 19,647.96 and 7,951.16 is: 10,971.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,238.92 : 19,647.96 = 7,951.16 : x
  2. Step 2: Convert to fraction form
    14,238.92/19,647.96 = 7,951.16/x
  3. Step 3: Cross multiply
    14,238.92x = 19,647.96 × 7,951.16
  4. Step 4: Simplify right side
    14,238.92x = 156,224,073.63
  5. Step 5: Solve for x
    x = 156,224,073.63/14,238.92
  6. Step 6: Final answer
    x = 10,971.62

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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.