Home / 19,284.56-28,914.12-12,690.80

Finding the Fourth Proportional to 19,284.56, 28,914.12 and 12,690.80

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Solution

The fourth proportional to 19,284.56, 28,914.12 and 12,690.80 is: 19,027.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,284.56 : 28,914.12 = 12,690.80 : x
  2. Step 2: Convert to fraction form
    19,284.56/28,914.12 = 12,690.80/x
  3. Step 3: Cross multiply
    19,284.56x = 28,914.12 × 12,690.80
  4. Step 4: Simplify right side
    19,284.56x = 366,943,314.10
  5. Step 5: Solve for x
    x = 366,943,314.10/19,284.56
  6. Step 6: Final answer
    x = 19,027.83

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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.