Home / 20,434,074.12-28,201,015.08-15,268,467.60

Finding the Fourth Proportional to 20,434,074.12, 28,201,015.08 and 15,268,467.60

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Solution

The fourth proportional to 20,434,074.12, 28,201,015.08 and 15,268,467.60 is: 21,071,974.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434,074.12 : 28,201,015.08 = 15,268,467.60 : x
  2. Step 2: Convert to fraction form
    20,434,074.12/28,201,015.08 = 15,268,467.60/x
  3. Step 3: Cross multiply
    20,434,074.12x = 28,201,015.08 × 15,268,467.60
  4. Step 4: Simplify right side
    20,434,074.12x = 430,586,285,036,091.38
  5. Step 5: Solve for x
    x = 430,586,285,036,091.38/20,434,074.12
  6. Step 6: Final answer
    x = 21,071,974.32

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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.