Home / 19,181.28-28,811.28-12,616.80

Finding the Fourth Proportional to 19,181.28, 28,811.28 and 12,616.80

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Solution

The fourth proportional to 19,181.28, 28,811.28 and 12,616.80 is: 18,951.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,181.28 : 28,811.28 = 12,616.80 : x
  2. Step 2: Convert to fraction form
    19,181.28/28,811.28 = 12,616.80/x
  3. Step 3: Cross multiply
    19,181.28x = 28,811.28 × 12,616.80
  4. Step 4: Simplify right side
    19,181.28x = 363,506,157.50
  5. Step 5: Solve for x
    x = 363,506,157.50/19,181.28
  6. Step 6: Final answer
    x = 18,951.09

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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.