Home / 12,730.90-19,102.08-6,880.66

Finding the Fourth Proportional to 12,730.90, 19,102.08 and 6,880.66

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Solution

The fourth proportional to 12,730.90, 19,102.08 and 6,880.66 is: 10,324.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,730.90 : 19,102.08 = 6,880.66 : x
  2. Step 2: Convert to fraction form
    12,730.90/19,102.08 = 6,880.66/x
  3. Step 3: Cross multiply
    12,730.90x = 19,102.08 × 6,880.66
  4. Step 4: Simplify right side
    12,730.90x = 131,434,917.77
  5. Step 5: Solve for x
    x = 131,434,917.77/12,730.90
  6. Step 6: Final answer
    x = 10,324.09

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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.