Home / 13,722.51-18,922.04-8,933.63

Finding the Fourth Proportional to 13,722.51, 18,922.04 and 8,933.63

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Solution

The fourth proportional to 13,722.51, 18,922.04 and 8,933.63 is: 12,318.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.51 : 18,922.04 = 8,933.63 : x
  2. Step 2: Convert to fraction form
    13,722.51/18,922.04 = 8,933.63/x
  3. Step 3: Cross multiply
    13,722.51x = 18,922.04 × 8,933.63
  4. Step 4: Simplify right side
    13,722.51x = 169,042,364.93
  5. Step 5: Solve for x
    x = 169,042,364.93/13,722.51
  6. Step 6: Final answer
    x = 12,318.62

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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.