Home / 12,986.30-19,370.08-10,881.92

Finding the Fourth Proportional to 12,986.30, 19,370.08 and 10,881.92

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Solution

The fourth proportional to 12,986.30, 19,370.08 and 10,881.92 is: 16,231.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.30 : 19,370.08 = 10,881.92 : x
  2. Step 2: Convert to fraction form
    12,986.30/19,370.08 = 10,881.92/x
  3. Step 3: Cross multiply
    12,986.30x = 19,370.08 × 10,881.92
  4. Step 4: Simplify right side
    12,986.30x = 210,783,722.98
  5. Step 5: Solve for x
    x = 210,783,722.98/12,986.30
  6. Step 6: Final answer
    x = 16,231.23

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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.