Home / 12,986.20-19,463.30-8,826.20

Finding the Fourth Proportional to 12,986.20, 19,463.30 and 8,826.20

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Solution

The fourth proportional to 12,986.20, 19,463.30 and 8,826.20 is: 13,228.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.20 : 19,463.30 = 8,826.20 : x
  2. Step 2: Convert to fraction form
    12,986.20/19,463.30 = 8,826.20/x
  3. Step 3: Cross multiply
    12,986.20x = 19,463.30 × 8,826.20
  4. Step 4: Simplify right side
    12,986.20x = 171,786,978.46
  5. Step 5: Solve for x
    x = 171,786,978.46/12,986.20
  6. Step 6: Final answer
    x = 13,228.43

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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.