Home / 11,975.40-16,486.08-8,986.32

Finding the Fourth Proportional to 11,975.40, 16,486.08 and 8,986.32

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Solution

The fourth proportional to 11,975.40, 16,486.08 and 8,986.32 is: 12,371.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,975.40 : 16,486.08 = 8,986.32 : x
  2. Step 2: Convert to fraction form
    11,975.40/16,486.08 = 8,986.32/x
  3. Step 3: Cross multiply
    11,975.40x = 16,486.08 × 8,986.32
  4. Step 4: Simplify right side
    11,975.40x = 148,149,190.43
  5. Step 5: Solve for x
    x = 148,149,190.43/11,975.40
  6. Step 6: Final answer
    x = 12,371.13

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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.