Home / 19,188.08-28,782.12-18,105.20

Finding the Fourth Proportional to 19,188.08, 28,782.12 and 18,105.20

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Solution

The fourth proportional to 19,188.08, 28,782.12 and 18,105.20 is: 27,157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,188.08 : 28,782.12 = 18,105.20 : x
  2. Step 2: Convert to fraction form
    19,188.08/28,782.12 = 18,105.20/x
  3. Step 3: Cross multiply
    19,188.08x = 28,782.12 × 18,105.20
  4. Step 4: Simplify right side
    19,188.08x = 521,106,039.02
  5. Step 5: Solve for x
    x = 521,106,039.02/19,188.08
  6. Step 6: Final answer
    x = 27,157.80

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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.