Home / 20,055.28-27,643.16-15,078.64

Finding the Fourth Proportional to 20,055.28, 27,643.16 and 15,078.64

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Solution

The fourth proportional to 20,055.28, 27,643.16 and 15,078.64 is: 20,783.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,055.28 : 27,643.16 = 15,078.64 : x
  2. Step 2: Convert to fraction form
    20,055.28/27,643.16 = 15,078.64/x
  3. Step 3: Cross multiply
    20,055.28x = 27,643.16 × 15,078.64
  4. Step 4: Simplify right side
    20,055.28x = 416,821,258.10
  5. Step 5: Solve for x
    x = 416,821,258.10/20,055.28
  6. Step 6: Final answer
    x = 20,783.62

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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.