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Finding the Fourth Proportional to 43,583.04, 65,370.72 and 13,992.96

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Solution

The fourth proportional to 43,583.04, 65,370.72 and 13,992.96 is: 20,988.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,583.04 : 65,370.72 = 13,992.96 : x
  2. Step 2: Convert to fraction form
    43,583.04/65,370.72 = 13,992.96/x
  3. Step 3: Cross multiply
    43,583.04x = 65,370.72 × 13,992.96
  4. Step 4: Simplify right side
    43,583.04x = 914,729,870.13
  5. Step 5: Solve for x
    x = 914,729,870.13/43,583.04
  6. Step 6: Final answer
    x = 20,988.21

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Why These Related Problems?

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