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Finding the Fourth Proportional to 19,415.86, 29,102.47 and 11,077.70

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Solution

The fourth proportional to 19,415.86, 29,102.47 and 11,077.70 is: 16,604.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,415.86 : 29,102.47 = 11,077.70 : x
  2. Step 2: Convert to fraction form
    19,415.86/29,102.47 = 11,077.70/x
  3. Step 3: Cross multiply
    19,415.86x = 29,102.47 × 11,077.70
  4. Step 4: Simplify right side
    19,415.86x = 322,388,258.71
  5. Step 5: Solve for x
    x = 322,388,258.71/19,415.86
  6. Step 6: Final answer
    x = 16,604.38

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.