Home / 20,376.75-28,119.99-11,884.74

Finding the Fourth Proportional to 20,376.75, 28,119.99 and 11,884.74

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Solution

The fourth proportional to 20,376.75, 28,119.99 and 11,884.74 is: 16,400.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,376.75 : 28,119.99 = 11,884.74 : x
  2. Step 2: Convert to fraction form
    20,376.75/28,119.99 = 11,884.74/x
  3. Step 3: Cross multiply
    20,376.75x = 28,119.99 × 11,884.74
  4. Step 4: Simplify right side
    20,376.75x = 334,198,686.79
  5. Step 5: Solve for x
    x = 334,198,686.79/20,376.75
  6. Step 6: Final answer
    x = 16,400.98

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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.