Home / 20,467.60-28,244.36-11,515.60

Finding the Fourth Proportional to 20,467.60, 28,244.36 and 11,515.60

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Solution

The fourth proportional to 20,467.60, 28,244.36 and 11,515.60 is: 15,891.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,467.60 : 28,244.36 = 11,515.60 : x
  2. Step 2: Convert to fraction form
    20,467.60/28,244.36 = 11,515.60/x
  3. Step 3: Cross multiply
    20,467.60x = 28,244.36 × 11,515.60
  4. Step 4: Simplify right side
    20,467.60x = 325,250,752.02
  5. Step 5: Solve for x
    x = 325,250,752.02/20,467.60
  6. Step 6: Final answer
    x = 15,891.01

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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.