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Finding the Fourth Proportional to 43,568.16, 65,363.16 and 13,988.96

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Solution

The fourth proportional to 43,568.16, 65,363.16 and 13,988.96 is: 20,986.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,568.16 : 65,363.16 = 13,988.96 : x
  2. Step 2: Convert to fraction form
    43,568.16/65,363.16 = 13,988.96/x
  3. Step 3: Cross multiply
    43,568.16x = 65,363.16 × 13,988.96
  4. Step 4: Simplify right side
    43,568.16x = 914,362,630.71
  5. Step 5: Solve for x
    x = 914,362,630.71/43,568.16
  6. Step 6: Final answer
    x = 20,986.95

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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.