Home / 13,280.91-19,911.60-8,017.80

Finding the Fourth Proportional to 13,280.91, 19,911.60 and 8,017.80

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Solution

The fourth proportional to 13,280.91, 19,911.60 and 8,017.80 is: 12,020.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.91 : 19,911.60 = 8,017.80 : x
  2. Step 2: Convert to fraction form
    13,280.91/19,911.60 = 8,017.80/x
  3. Step 3: Cross multiply
    13,280.91x = 19,911.60 × 8,017.80
  4. Step 4: Simplify right side
    13,280.91x = 159,647,226.48
  5. Step 5: Solve for x
    x = 159,647,226.48/13,280.91
  6. Step 6: Final answer
    x = 12,020.80

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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.