Home / 13,183.46-19,681.18-12,722.12

Finding the Fourth Proportional to 13,183.46, 19,681.18 and 12,722.12

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Solution

The fourth proportional to 13,183.46, 19,681.18 and 12,722.12 is: 18,992.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.46 : 19,681.18 = 12,722.12 : x
  2. Step 2: Convert to fraction form
    13,183.46/19,681.18 = 12,722.12/x
  3. Step 3: Cross multiply
    13,183.46x = 19,681.18 × 12,722.12
  4. Step 4: Simplify right side
    13,183.46x = 250,386,333.70
  5. Step 5: Solve for x
    x = 250,386,333.70/13,183.46
  6. Step 6: Final answer
    x = 18,992.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.