Home / 12,295.56-16,969.32-6,991.20

Finding the Fourth Proportional to 12,295.56, 16,969.32 and 6,991.20

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Solution

The fourth proportional to 12,295.56, 16,969.32 and 6,991.20 is: 9,648.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,295.56 : 16,969.32 = 6,991.20 : x
  2. Step 2: Convert to fraction form
    12,295.56/16,969.32 = 6,991.20/x
  3. Step 3: Cross multiply
    12,295.56x = 16,969.32 × 6,991.20
  4. Step 4: Simplify right side
    12,295.56x = 118,635,909.98
  5. Step 5: Solve for x
    x = 118,635,909.98/12,295.56
  6. Step 6: Final answer
    x = 9,648.68

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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.