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Finding the Fourth Proportional to 13,951.42, 19,251.97 and 7,899.93

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Solution

The fourth proportional to 13,951.42, 19,251.97 and 7,899.93 is: 10,901.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,951.42 : 19,251.97 = 7,899.93 : x
  2. Step 2: Convert to fraction form
    13,951.42/19,251.97 = 7,899.93/x
  3. Step 3: Cross multiply
    13,951.42x = 19,251.97 × 7,899.93
  4. Step 4: Simplify right side
    13,951.42x = 152,089,215.36
  5. Step 5: Solve for x
    x = 152,089,215.36/13,951.42
  6. Step 6: Final answer
    x = 10,901.34

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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.