Home / 12,908.60-19,370.10-5,511.80

Finding the Fourth Proportional to 12,908.60, 19,370.10 and 5,511.80

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Solution

The fourth proportional to 12,908.60, 19,370.10 and 5,511.80 is: 8,270.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,908.60 : 19,370.10 = 5,511.80 : x
  2. Step 2: Convert to fraction form
    12,908.60/19,370.10 = 5,511.80/x
  3. Step 3: Cross multiply
    12,908.60x = 19,370.10 × 5,511.80
  4. Step 4: Simplify right side
    12,908.60x = 106,764,117.18
  5. Step 5: Solve for x
    x = 106,764,117.18/12,908.60
  6. Step 6: Final answer
    x = 8,270.77

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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.