Home / 15,786.44-21,765.58-10,111.86

Finding the Fourth Proportional to 15,786.44, 21,765.58 and 10,111.86

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Solution

The fourth proportional to 15,786.44, 21,765.58 and 10,111.86 is: 13,941.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,786.44 : 21,765.58 = 10,111.86 : x
  2. Step 2: Convert to fraction form
    15,786.44/21,765.58 = 10,111.86/x
  3. Step 3: Cross multiply
    15,786.44x = 21,765.58 × 10,111.86
  4. Step 4: Simplify right side
    15,786.44x = 220,090,497.78
  5. Step 5: Solve for x
    x = 220,090,497.78/15,786.44
  6. Step 6: Final answer
    x = 13,941.74

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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.