Home / 13,469.31-18,590.67-8,745.39

Finding the Fourth Proportional to 13,469.31, 18,590.67 and 8,745.39

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Solution

The fourth proportional to 13,469.31, 18,590.67 and 8,745.39 is: 12,070.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,469.31 : 18,590.67 = 8,745.39 : x
  2. Step 2: Convert to fraction form
    13,469.31/18,590.67 = 8,745.39/x
  3. Step 3: Cross multiply
    13,469.31x = 18,590.67 × 8,745.39
  4. Step 4: Simplify right side
    13,469.31x = 162,582,659.51
  5. Step 5: Solve for x
    x = 162,582,659.51/13,469.31
  6. Step 6: Final answer
    x = 12,070.60

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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.