Home / 20,346.28-28,078.32-14,388.64

Finding the Fourth Proportional to 20,346.28, 28,078.32 and 14,388.64

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Solution

The fourth proportional to 20,346.28, 28,078.32 and 14,388.64 is: 19,856.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346.28 : 28,078.32 = 14,388.64 : x
  2. Step 2: Convert to fraction form
    20,346.28/28,078.32 = 14,388.64/x
  3. Step 3: Cross multiply
    20,346.28x = 28,078.32 × 14,388.64
  4. Step 4: Simplify right side
    20,346.28x = 404,008,838.28
  5. Step 5: Solve for x
    x = 404,008,838.28/20,346.28
  6. Step 6: Final answer
    x = 19,856.64

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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.