Home / 12,986.24-19,479.36-8,372.48

Finding the Fourth Proportional to 12,986.24, 19,479.36 and 8,372.48

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Solution

The fourth proportional to 12,986.24, 19,479.36 and 8,372.48 is: 12,558.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.24 : 19,479.36 = 8,372.48 : x
  2. Step 2: Convert to fraction form
    12,986.24/19,479.36 = 8,372.48/x
  3. Step 3: Cross multiply
    12,986.24x = 19,479.36 × 8,372.48
  4. Step 4: Simplify right side
    12,986.24x = 163,090,552.01
  5. Step 5: Solve for x
    x = 163,090,552.01/12,986.24
  6. Step 6: Final answer
    x = 12,558.72

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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.