Home / 12,247.56-16,909.74-9,409.86

Finding the Fourth Proportional to 12,247.56, 16,909.74 and 9,409.86

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Solution

The fourth proportional to 12,247.56, 16,909.74 and 9,409.86 is: 12,991.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,247.56 : 16,909.74 = 9,409.86 : x
  2. Step 2: Convert to fraction form
    12,247.56/16,909.74 = 9,409.86/x
  3. Step 3: Cross multiply
    12,247.56x = 16,909.74 × 9,409.86
  4. Step 4: Simplify right side
    12,247.56x = 159,118,286.04
  5. Step 5: Solve for x
    x = 159,118,286.04/12,247.56
  6. Step 6: Final answer
    x = 12,991.84

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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.