Home / 20,528.64-30,647.16-19,799.64

Finding the Fourth Proportional to 20,528.64, 30,647.16 and 19,799.64

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Solution

The fourth proportional to 20,528.64, 30,647.16 and 19,799.64 is: 29,558.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.64 : 30,647.16 = 19,799.64 : x
  2. Step 2: Convert to fraction form
    20,528.64/30,647.16 = 19,799.64/x
  3. Step 3: Cross multiply
    20,528.64x = 30,647.16 × 19,799.64
  4. Step 4: Simplify right side
    20,528.64x = 606,802,735.02
  5. Step 5: Solve for x
    x = 606,802,735.02/20,528.64
  6. Step 6: Final answer
    x = 29,558.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.