Home / 43,984.80-65,979.06-12,820.08

Finding the Fourth Proportional to 43,984.80, 65,979.06 and 12,820.08

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Solution

The fourth proportional to 43,984.80, 65,979.06 and 12,820.08 is: 19,230.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,984.80 : 65,979.06 = 12,820.08 : x
  2. Step 2: Convert to fraction form
    43,984.80/65,979.06 = 12,820.08/x
  3. Step 3: Cross multiply
    43,984.80x = 65,979.06 × 12,820.08
  4. Step 4: Simplify right side
    43,984.80x = 845,856,827.52
  5. Step 5: Solve for x
    x = 845,856,827.52/43,984.80
  6. Step 6: Final answer
    x = 19,230.66

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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.