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Finding the Fourth Proportional to 14,388.74, 19,856.86 and 8,101.34

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Solution

The fourth proportional to 14,388.74, 19,856.86 and 8,101.34 is: 11,180.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,388.74 : 19,856.86 = 8,101.34 : x
  2. Step 2: Convert to fraction form
    14,388.74/19,856.86 = 8,101.34/x
  3. Step 3: Cross multiply
    14,388.74x = 19,856.86 × 8,101.34
  4. Step 4: Simplify right side
    14,388.74x = 160,867,174.19
  5. Step 5: Solve for x
    x = 160,867,174.19/14,388.74
  6. Step 6: Final answer
    x = 11,180.07

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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.