Home / 12,697.90-19,059.16-6,128.70

Finding the Fourth Proportional to 12,697.90, 19,059.16 and 6,128.70

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Solution

The fourth proportional to 12,697.90, 19,059.16 and 6,128.70 is: 9,198.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,697.90 : 19,059.16 = 6,128.70 : x
  2. Step 2: Convert to fraction form
    12,697.90/19,059.16 = 6,128.70/x
  3. Step 3: Cross multiply
    12,697.90x = 19,059.16 × 6,128.70
  4. Step 4: Simplify right side
    12,697.90x = 116,807,873.89
  5. Step 5: Solve for x
    x = 116,807,873.89/12,697.90
  6. Step 6: Final answer
    x = 9,198.99

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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.