Home / 19,218.40-28,827.60-11,798.80

Finding the Fourth Proportional to 19,218.40, 28,827.60 and 11,798.80

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Solution

The fourth proportional to 19,218.40, 28,827.60 and 11,798.80 is: 17,698.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,218.40 : 28,827.60 = 11,798.80 : x
  2. Step 2: Convert to fraction form
    19,218.40/28,827.60 = 11,798.80/x
  3. Step 3: Cross multiply
    19,218.40x = 28,827.60 × 11,798.80
  4. Step 4: Simplify right side
    19,218.40x = 340,131,086.88
  5. Step 5: Solve for x
    x = 340,131,086.88/19,218.40
  6. Step 6: Final answer
    x = 17,698.20

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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.