Home / 43,345.20-65,018-18,378.98

Finding the Fourth Proportional to 43,345.20, 65,018 and 18,378.98

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Solution

The fourth proportional to 43,345.20, 65,018 and 18,378.98 is: 27,568.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,345.20 : 65,018 = 18,378.98 : x
  2. Step 2: Convert to fraction form
    43,345.20/65,018 = 18,378.98/x
  3. Step 3: Cross multiply
    43,345.20x = 65,018 × 18,378.98
  4. Step 4: Simplify right side
    43,345.20x = 1,194,964,521.64
  5. Step 5: Solve for x
    x = 1,194,964,521.64/43,345.20
  6. Step 6: Final answer
    x = 27,568.55

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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.