Home / 17,880.12-24,679.42-11,909.60

Finding the Fourth Proportional to 17,880.12, 24,679.42 and 11,909.60

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Solution

The fourth proportional to 17,880.12, 24,679.42 and 11,909.60 is: 16,438.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,880.12 : 24,679.42 = 11,909.60 : x
  2. Step 2: Convert to fraction form
    17,880.12/24,679.42 = 11,909.60/x
  3. Step 3: Cross multiply
    17,880.12x = 24,679.42 × 11,909.60
  4. Step 4: Simplify right side
    17,880.12x = 293,922,020.43
  5. Step 5: Solve for x
    x = 293,922,020.43/17,880.12
  6. Step 6: Final answer
    x = 16,438.48

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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.