Home / 28,885.10-43,331.70-9,161.60

Finding the Fourth Proportional to 28,885.10, 43,331.70 and 9,161.60

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Solution

The fourth proportional to 28,885.10, 43,331.70 and 9,161.60 is: 13,743.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,885.10 : 43,331.70 = 9,161.60 : x
  2. Step 2: Convert to fraction form
    28,885.10/43,331.70 = 9,161.60/x
  3. Step 3: Cross multiply
    28,885.10x = 43,331.70 × 9,161.60
  4. Step 4: Simplify right side
    28,885.10x = 396,987,702.72
  5. Step 5: Solve for x
    x = 396,987,702.72/28,885.10
  6. Step 6: Final answer
    x = 13,743.68

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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.