Home / 12,889.70-19,337.30-4,125.30

Finding the Fourth Proportional to 12,889.70, 19,337.30 and 4,125.30

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Solution

The fourth proportional to 12,889.70, 19,337.30 and 4,125.30 is: 6,188.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.70 : 19,337.30 = 4,125.30 : x
  2. Step 2: Convert to fraction form
    12,889.70/19,337.30 = 4,125.30/x
  3. Step 3: Cross multiply
    12,889.70x = 19,337.30 × 4,125.30
  4. Step 4: Simplify right side
    12,889.70x = 79,772,163.69
  5. Step 5: Solve for x
    x = 79,772,163.69/12,889.70
  6. Step 6: Final answer
    x = 6,188.83

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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.