Home / 19,150.92-28,698.60-13,221.72

Finding the Fourth Proportional to 19,150.92, 28,698.60 and 13,221.72

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Solution

The fourth proportional to 19,150.92, 28,698.60 and 13,221.72 is: 19,813.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,150.92 : 28,698.60 = 13,221.72 : x
  2. Step 2: Convert to fraction form
    19,150.92/28,698.60 = 13,221.72/x
  3. Step 3: Cross multiply
    19,150.92x = 28,698.60 × 13,221.72
  4. Step 4: Simplify right side
    19,150.92x = 379,444,853.59
  5. Step 5: Solve for x
    x = 379,444,853.59/19,150.92
  6. Step 6: Final answer
    x = 19,813.40

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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.