Home / 12,986.92-19,476.24-4,219.72

Finding the Fourth Proportional to 12,986.92, 19,476.24 and 4,219.72

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Solution

The fourth proportional to 12,986.92, 19,476.24 and 4,219.72 is: 6,328.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.92 : 19,476.24 = 4,219.72 : x
  2. Step 2: Convert to fraction form
    12,986.92/19,476.24 = 4,219.72/x
  3. Step 3: Cross multiply
    12,986.92x = 19,476.24 × 4,219.72
  4. Step 4: Simplify right side
    12,986.92x = 82,184,279.45
  5. Step 5: Solve for x
    x = 82,184,279.45/12,986.92
  6. Step 6: Final answer
    x = 6,328.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.