Home / 19,029.32-28,540.86-5,179.40

Finding the Fourth Proportional to 19,029.32, 28,540.86 and 5,179.40

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Solution

The fourth proportional to 19,029.32, 28,540.86 and 5,179.40 is: 7,768.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,029.32 : 28,540.86 = 5,179.40 : x
  2. Step 2: Convert to fraction form
    19,029.32/28,540.86 = 5,179.40/x
  3. Step 3: Cross multiply
    19,029.32x = 28,540.86 × 5,179.40
  4. Step 4: Simplify right side
    19,029.32x = 147,824,530.28
  5. Step 5: Solve for x
    x = 147,824,530.28/19,029.32
  6. Step 6: Final answer
    x = 7,768.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.