Home / 43,979.40-65,920.59-20,280.21

Finding the Fourth Proportional to 43,979.40, 65,920.59 and 20,280.21

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Solution

The fourth proportional to 43,979.40, 65,920.59 and 20,280.21 is: 30,397.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,979.40 : 65,920.59 = 20,280.21 : x
  2. Step 2: Convert to fraction form
    43,979.40/65,920.59 = 20,280.21/x
  3. Step 3: Cross multiply
    43,979.40x = 65,920.59 × 20,280.21
  4. Step 4: Simplify right side
    43,979.40x = 1,336,883,408.52
  5. Step 5: Solve for x
    x = 1,336,883,408.52/43,979.40
  6. Step 6: Final answer
    x = 30,397.95

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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.