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Finding the Fourth Proportional to 43,382.88, 65,040.84 and 19,981.44

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Solution

The fourth proportional to 43,382.88, 65,040.84 and 19,981.44 is: 29,956.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,382.88 : 65,040.84 = 19,981.44 : x
  2. Step 2: Convert to fraction form
    43,382.88/65,040.84 = 19,981.44/x
  3. Step 3: Cross multiply
    43,382.88x = 65,040.84 × 19,981.44
  4. Step 4: Simplify right side
    43,382.88x = 1,299,609,642.01
  5. Step 5: Solve for x
    x = 1,299,609,642.01/43,382.88
  6. Step 6: Final answer
    x = 29,956.74

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1.5x scale

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.