Home / 13,994.70-19,311.93-8,689.92

Finding the Fourth Proportional to 13,994.70, 19,311.93 and 8,689.92

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Solution

The fourth proportional to 13,994.70, 19,311.93 and 8,689.92 is: 11,991.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,994.70 : 19,311.93 = 8,689.92 : x
  2. Step 2: Convert to fraction form
    13,994.70/19,311.93 = 8,689.92/x
  3. Step 3: Cross multiply
    13,994.70x = 19,311.93 × 8,689.92
  4. Step 4: Simplify right side
    13,994.70x = 167,819,126.75
  5. Step 5: Solve for x
    x = 167,819,126.75/13,994.70
  6. Step 6: Final answer
    x = 11,991.62

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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.