Home / 19,639.75-27,102.86-11,256.25

Finding the Fourth Proportional to 19,639.75, 27,102.86 and 11,256.25

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Solution

The fourth proportional to 19,639.75, 27,102.86 and 11,256.25 is: 15,533.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.75 : 27,102.86 = 11,256.25 : x
  2. Step 2: Convert to fraction form
    19,639.75/27,102.86 = 11,256.25/x
  3. Step 3: Cross multiply
    19,639.75x = 27,102.86 × 11,256.25
  4. Step 4: Simplify right side
    19,639.75x = 305,076,567.88
  5. Step 5: Solve for x
    x = 305,076,567.88/19,639.75
  6. Step 6: Final answer
    x = 15,533.63

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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.