Home / 13,219.74-18,193.68-12,157.83

Finding the Fourth Proportional to 13,219.74, 18,193.68 and 12,157.83

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Solution

The fourth proportional to 13,219.74, 18,193.68 and 12,157.83 is: 16,732.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.74 : 18,193.68 = 12,157.83 : x
  2. Step 2: Convert to fraction form
    13,219.74/18,193.68 = 12,157.83/x
  3. Step 3: Cross multiply
    13,219.74x = 18,193.68 × 12,157.83
  4. Step 4: Simplify right side
    13,219.74x = 221,195,668.51
  5. Step 5: Solve for x
    x = 221,195,668.51/13,219.74
  6. Step 6: Final answer
    x = 16,732.23

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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.