Home / 19,211.75-28,810.69-8,119.29

Finding the Fourth Proportional to 19,211.75, 28,810.69 and 8,119.29

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Solution

The fourth proportional to 19,211.75, 28,810.69 and 8,119.29 is: 12,176.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,211.75 : 28,810.69 = 8,119.29 : x
  2. Step 2: Convert to fraction form
    19,211.75/28,810.69 = 8,119.29/x
  3. Step 3: Cross multiply
    19,211.75x = 28,810.69 × 8,119.29
  4. Step 4: Simplify right side
    19,211.75x = 233,922,347.21
  5. Step 5: Solve for x
    x = 233,922,347.21/19,211.75
  6. Step 6: Final answer
    x = 12,176.00

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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.