Home / 18,587.76-25,642.44-11,511.60

Finding the Fourth Proportional to 18,587.76, 25,642.44 and 11,511.60

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Solution

The fourth proportional to 18,587.76, 25,642.44 and 11,511.60 is: 15,880.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,587.76 : 25,642.44 = 11,511.60 : x
  2. Step 2: Convert to fraction form
    18,587.76/25,642.44 = 11,511.60/x
  3. Step 3: Cross multiply
    18,587.76x = 25,642.44 × 11,511.60
  4. Step 4: Simplify right side
    18,587.76x = 295,185,512.30
  5. Step 5: Solve for x
    x = 295,185,512.30/18,587.76
  6. Step 6: Final answer
    x = 15,880.64

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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.