Home / 30,407.78-41,962.34-16,979.27

Finding the Fourth Proportional to 30,407.78, 41,962.34 and 16,979.27

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Solution

The fourth proportional to 30,407.78, 41,962.34 and 16,979.27 is: 23,431.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,407.78 : 41,962.34 = 16,979.27 : x
  2. Step 2: Convert to fraction form
    30,407.78/41,962.34 = 16,979.27/x
  3. Step 3: Cross multiply
    30,407.78x = 41,962.34 × 16,979.27
  4. Step 4: Simplify right side
    30,407.78x = 712,489,733.33
  5. Step 5: Solve for x
    x = 712,489,733.33/30,407.78
  6. Step 6: Final answer
    x = 23,431.16

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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.