Home / 21,746.25-29,784.96-20,469.60

Finding the Fourth Proportional to 21,746.25, 29,784.96 and 20,469.60

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Solution

The fourth proportional to 21,746.25, 29,784.96 and 20,469.60 is: 28,036.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,746.25 : 29,784.96 = 20,469.60 : x
  2. Step 2: Convert to fraction form
    21,746.25/29,784.96 = 20,469.60/x
  3. Step 3: Cross multiply
    21,746.25x = 29,784.96 × 20,469.60
  4. Step 4: Simplify right side
    21,746.25x = 609,686,217.22
  5. Step 5: Solve for x
    x = 609,686,217.22/21,746.25
  6. Step 6: Final answer
    x = 28,036.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.