Home / 19,019.36-28,520.86-6,540.64

Finding the Fourth Proportional to 19,019.36, 28,520.86 and 6,540.64

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Solution

The fourth proportional to 19,019.36, 28,520.86 and 6,540.64 is: 9,808.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,019.36 : 28,520.86 = 6,540.64 : x
  2. Step 2: Convert to fraction form
    19,019.36/28,520.86 = 6,540.64/x
  3. Step 3: Cross multiply
    19,019.36x = 28,520.86 × 6,540.64
  4. Step 4: Simplify right side
    19,019.36x = 186,544,677.75
  5. Step 5: Solve for x
    x = 186,544,677.75/19,019.36
  6. Step 6: Final answer
    x = 9,808.15

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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.