Home / 19,186.80-28,778.04-8,095.20

Finding the Fourth Proportional to 19,186.80, 28,778.04 and 8,095.20

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Solution

The fourth proportional to 19,186.80, 28,778.04 and 8,095.20 is: 12,141.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,186.80 : 28,778.04 = 8,095.20 : x
  2. Step 2: Convert to fraction form
    19,186.80/28,778.04 = 8,095.20/x
  3. Step 3: Cross multiply
    19,186.80x = 28,778.04 × 8,095.20
  4. Step 4: Simplify right side
    19,186.80x = 232,963,989.41
  5. Step 5: Solve for x
    x = 232,963,989.41/19,186.80
  6. Step 6: Final answer
    x = 12,141.89

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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.