Home / 19,105.70-28,669.68-8,011.53

Finding the Fourth Proportional to 19,105.70, 28,669.68 and 8,011.53

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Solution

The fourth proportional to 19,105.70, 28,669.68 and 8,011.53 is: 12,021.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,105.70 : 28,669.68 = 8,011.53 : x
  2. Step 2: Convert to fraction form
    19,105.70/28,669.68 = 8,011.53/x
  3. Step 3: Cross multiply
    19,105.70x = 28,669.68 × 8,011.53
  4. Step 4: Simplify right side
    19,105.70x = 229,688,001.41
  5. Step 5: Solve for x
    x = 229,688,001.41/19,105.70
  6. Step 6: Final answer
    x = 12,021.97

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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.