Home / 12,216.45-16,849.47-8,445.92

Finding the Fourth Proportional to 12,216.45, 16,849.47 and 8,445.92

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Solution

The fourth proportional to 12,216.45, 16,849.47 and 8,445.92 is: 11,648.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,216.45 : 16,849.47 = 8,445.92 : x
  2. Step 2: Convert to fraction form
    12,216.45/16,849.47 = 8,445.92/x
  3. Step 3: Cross multiply
    12,216.45x = 16,849.47 × 8,445.92
  4. Step 4: Simplify right side
    12,216.45x = 142,309,270.36
  5. Step 5: Solve for x
    x = 142,309,270.36/12,216.45
  6. Step 6: Final answer
    x = 11,648.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.