Home / 12,226.75-16,866.93-8,642.35

Finding the Fourth Proportional to 12,226.75, 16,866.93 and 8,642.35

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Solution

The fourth proportional to 12,226.75, 16,866.93 and 8,642.35 is: 11,922.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,226.75 : 16,866.93 = 8,642.35 : x
  2. Step 2: Convert to fraction form
    12,226.75/16,866.93 = 8,642.35/x
  3. Step 3: Cross multiply
    12,226.75x = 16,866.93 × 8,642.35
  4. Step 4: Simplify right side
    12,226.75x = 145,769,871.10
  5. Step 5: Solve for x
    x = 145,769,871.10/12,226.75
  6. Step 6: Final answer
    x = 11,922.21

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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.