Home / 12,679.56-19,021.39-5,284.76

Finding the Fourth Proportional to 12,679.56, 19,021.39 and 5,284.76

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Solution

The fourth proportional to 12,679.56, 19,021.39 and 5,284.76 is: 7,928.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,679.56 : 19,021.39 = 5,284.76 : x
  2. Step 2: Convert to fraction form
    12,679.56/19,021.39 = 5,284.76/x
  3. Step 3: Cross multiply
    12,679.56x = 19,021.39 × 5,284.76
  4. Step 4: Simplify right side
    12,679.56x = 100,523,515.36
  5. Step 5: Solve for x
    x = 100,523,515.36/12,679.56
  6. Step 6: Final answer
    x = 7,928.00

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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.