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Finding the Fourth Proportional to 19,641.45, 29,444.71 and 7,159.13

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Solution

The fourth proportional to 19,641.45, 29,444.71 and 7,159.13 is: 10,732.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,641.45 : 29,444.71 = 7,159.13 : x
  2. Step 2: Convert to fraction form
    19,641.45/29,444.71 = 7,159.13/x
  3. Step 3: Cross multiply
    19,641.45x = 29,444.71 × 7,159.13
  4. Step 4: Simplify right side
    19,641.45x = 210,798,506.70
  5. Step 5: Solve for x
    x = 210,798,506.70/19,641.45
  6. Step 6: Final answer
    x = 10,732.33

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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.