Home / 13,769.58-18,994.74-8,724.90

Finding the Fourth Proportional to 13,769.58, 18,994.74 and 8,724.90

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Solution

The fourth proportional to 13,769.58, 18,994.74 and 8,724.90 is: 12,035.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,769.58 : 18,994.74 = 8,724.90 : x
  2. Step 2: Convert to fraction form
    13,769.58/18,994.74 = 8,724.90/x
  3. Step 3: Cross multiply
    13,769.58x = 18,994.74 × 8,724.90
  4. Step 4: Simplify right side
    13,769.58x = 165,727,207.03
  5. Step 5: Solve for x
    x = 165,727,207.03/13,769.58
  6. Step 6: Final answer
    x = 12,035.75

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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.