Home / 19,288.60-28,911.30-8,193.40

Finding the Fourth Proportional to 19,288.60, 28,911.30 and 8,193.40

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Solution

The fourth proportional to 19,288.60, 28,911.30 and 8,193.40 is: 12,280.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,288.60 : 28,911.30 = 8,193.40 : x
  2. Step 2: Convert to fraction form
    19,288.60/28,911.30 = 8,193.40/x
  3. Step 3: Cross multiply
    19,288.60x = 28,911.30 × 8,193.40
  4. Step 4: Simplify right side
    19,288.60x = 236,881,845.42
  5. Step 5: Solve for x
    x = 236,881,845.42/19,288.60
  6. Step 6: Final answer
    x = 12,280.92

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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.