Home / 19,100.15-28,640.93-6,620.88

Finding the Fourth Proportional to 19,100.15, 28,640.93 and 6,620.88

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Solution

The fourth proportional to 19,100.15, 28,640.93 and 6,620.88 is: 9,928.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,100.15 : 28,640.93 = 6,620.88 : x
  2. Step 2: Convert to fraction form
    19,100.15/28,640.93 = 6,620.88/x
  3. Step 3: Cross multiply
    19,100.15x = 28,640.93 × 6,620.88
  4. Step 4: Simplify right side
    19,100.15x = 189,628,127.51
  5. Step 5: Solve for x
    x = 189,628,127.51/19,100.15
  6. Step 6: Final answer
    x = 9,928.10

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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.