Home / 20,153.66-30,188.90-11,808.33

Finding the Fourth Proportional to 20,153.66, 30,188.90 and 11,808.33

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Solution

The fourth proportional to 20,153.66, 30,188.90 and 11,808.33 is: 17,688.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,153.66 : 30,188.90 = 11,808.33 : x
  2. Step 2: Convert to fraction form
    20,153.66/30,188.90 = 11,808.33/x
  3. Step 3: Cross multiply
    20,153.66x = 30,188.90 × 11,808.33
  4. Step 4: Simplify right side
    20,153.66x = 356,480,409.85
  5. Step 5: Solve for x
    x = 356,480,409.85/20,153.66
  6. Step 6: Final answer
    x = 17,688.13

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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.