Home / 13,659.08-18,847.97-7,690.60

Finding the Fourth Proportional to 13,659.08, 18,847.97 and 7,690.60

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Solution

The fourth proportional to 13,659.08, 18,847.97 and 7,690.60 is: 10,612.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,659.08 : 18,847.97 = 7,690.60 : x
  2. Step 2: Convert to fraction form
    13,659.08/18,847.97 = 7,690.60/x
  3. Step 3: Cross multiply
    13,659.08x = 18,847.97 × 7,690.60
  4. Step 4: Simplify right side
    13,659.08x = 144,952,103.84
  5. Step 5: Solve for x
    x = 144,952,103.84/13,659.08
  6. Step 6: Final answer
    x = 10,612.14

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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.