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Finding the Fourth Proportional to 43,338, 65,009.32 and 13,758.16

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Solution

The fourth proportional to 43,338, 65,009.32 and 13,758.16 is: 20,637.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,338 : 65,009.32 = 13,758.16 : x
  2. Step 2: Convert to fraction form
    43,338/65,009.32 = 13,758.16/x
  3. Step 3: Cross multiply
    43,338x = 65,009.32 × 13,758.16
  4. Step 4: Simplify right side
    43,338x = 894,408,626.05
  5. Step 5: Solve for x
    x = 894,408,626.05/43,338
  6. Step 6: Final answer
    x = 20,637.98

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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.