Home / 30,408.15-41,962.86-16,979.64

Finding the Fourth Proportional to 30,408.15, 41,962.86 and 16,979.64

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Solution

The fourth proportional to 30,408.15, 41,962.86 and 16,979.64 is: 23,431.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,408.15 : 41,962.86 = 16,979.64 : x
  2. Step 2: Convert to fraction form
    30,408.15/41,962.86 = 16,979.64/x
  3. Step 3: Cross multiply
    30,408.15x = 41,962.86 × 16,979.64
  4. Step 4: Simplify right side
    30,408.15x = 712,514,256.17
  5. Step 5: Solve for x
    x = 712,514,256.17/30,408.15
  6. Step 6: Final answer
    x = 23,431.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.