Home / 19,018.80-28,528.20-8,630.55

Finding the Fourth Proportional to 19,018.80, 28,528.20 and 8,630.55

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Solution

The fourth proportional to 19,018.80, 28,528.20 and 8,630.55 is: 12,945.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,018.80 : 28,528.20 = 8,630.55 : x
  2. Step 2: Convert to fraction form
    19,018.80/28,528.20 = 8,630.55/x
  3. Step 3: Cross multiply
    19,018.80x = 28,528.20 × 8,630.55
  4. Step 4: Simplify right side
    19,018.80x = 246,214,056.51
  5. Step 5: Solve for x
    x = 246,214,056.51/19,018.80
  6. Step 6: Final answer
    x = 12,945.83

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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.