Home / 20,899.71-28,840.46-11,467.53

Finding the Fourth Proportional to 20,899.71, 28,840.46 and 11,467.53

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Solution

The fourth proportional to 20,899.71, 28,840.46 and 11,467.53 is: 15,824.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.71 : 28,840.46 = 11,467.53 : x
  2. Step 2: Convert to fraction form
    20,899.71/28,840.46 = 11,467.53/x
  3. Step 3: Cross multiply
    20,899.71x = 28,840.46 × 11,467.53
  4. Step 4: Simplify right side
    20,899.71x = 330,728,782.93
  5. Step 5: Solve for x
    x = 330,728,782.93/20,899.71
  6. Step 6: Final answer
    x = 15,824.56

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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.