Home / 12,789.60-19,184.40-4,027.20

Finding the Fourth Proportional to 12,789.60, 19,184.40 and 4,027.20

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Solution

The fourth proportional to 12,789.60, 19,184.40 and 4,027.20 is: 6,040.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789.60 : 19,184.40 = 4,027.20 : x
  2. Step 2: Convert to fraction form
    12,789.60/19,184.40 = 4,027.20/x
  3. Step 3: Cross multiply
    12,789.60x = 19,184.40 × 4,027.20
  4. Step 4: Simplify right side
    12,789.60x = 77,259,415.68
  5. Step 5: Solve for x
    x = 77,259,415.68/12,789.60
  6. Step 6: Final answer
    x = 6,040.80

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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.