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Finding the Fourth Proportional to 19,395.51, 29,137.06 and 11,503.20

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Solution

The fourth proportional to 19,395.51, 29,137.06 and 11,503.20 is: 17,280.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,395.51 : 29,137.06 = 11,503.20 : x
  2. Step 2: Convert to fraction form
    19,395.51/29,137.06 = 11,503.20/x
  3. Step 3: Cross multiply
    19,395.51x = 29,137.06 × 11,503.20
  4. Step 4: Simplify right side
    19,395.51x = 335,169,608.71
  5. Step 5: Solve for x
    x = 335,169,608.71/19,395.51
  6. Step 6: Final answer
    x = 17,280.78

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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.