Home / 12,890.32-19,335.48-6,738.64

Finding the Fourth Proportional to 12,890.32, 19,335.48 and 6,738.64

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Solution

The fourth proportional to 12,890.32, 19,335.48 and 6,738.64 is: 10,107.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.32 : 19,335.48 = 6,738.64 : x
  2. Step 2: Convert to fraction form
    12,890.32/19,335.48 = 6,738.64/x
  3. Step 3: Cross multiply
    12,890.32x = 19,335.48 × 6,738.64
  4. Step 4: Simplify right side
    12,890.32x = 130,294,838.95
  5. Step 5: Solve for x
    x = 130,294,838.95/12,890.32
  6. Step 6: Final answer
    x = 10,107.96

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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.