Home / 21,904.08-30,245.34-20,803.29

Finding the Fourth Proportional to 21,904.08, 30,245.34 and 20,803.29

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Solution

The fourth proportional to 21,904.08, 30,245.34 and 20,803.29 is: 28,725.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,904.08 : 30,245.34 = 20,803.29 : x
  2. Step 2: Convert to fraction form
    21,904.08/30,245.34 = 20,803.29/x
  3. Step 3: Cross multiply
    21,904.08x = 30,245.34 × 20,803.29
  4. Step 4: Simplify right side
    21,904.08x = 629,202,579.17
  5. Step 5: Solve for x
    x = 629,202,579.17/21,904.08
  6. Step 6: Final answer
    x = 28,725.36

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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.