Home / 12,889.74-19,340.82-6,650.04

Finding the Fourth Proportional to 12,889.74, 19,340.82 and 6,650.04

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Solution

The fourth proportional to 12,889.74, 19,340.82 and 6,650.04 is: 9,978.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.74 : 19,340.82 = 6,650.04 : x
  2. Step 2: Convert to fraction form
    12,889.74/19,340.82 = 6,650.04/x
  3. Step 3: Cross multiply
    12,889.74x = 19,340.82 × 6,650.04
  4. Step 4: Simplify right side
    12,889.74x = 128,617,226.63
  5. Step 5: Solve for x
    x = 128,617,226.63/12,889.74
  6. Step 6: Final answer
    x = 9,978.26

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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.