Home / 13,074.44-18,038.58-8,109.32

Finding the Fourth Proportional to 13,074.44, 18,038.58 and 8,109.32

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Solution

The fourth proportional to 13,074.44, 18,038.58 and 8,109.32 is: 11,188.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,074.44 : 18,038.58 = 8,109.32 : x
  2. Step 2: Convert to fraction form
    13,074.44/18,038.58 = 8,109.32/x
  3. Step 3: Cross multiply
    13,074.44x = 18,038.58 × 8,109.32
  4. Step 4: Simplify right side
    13,074.44x = 146,280,617.57
  5. Step 5: Solve for x
    x = 146,280,617.57/13,074.44
  6. Step 6: Final answer
    x = 11,188.29

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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.