Home / 12,698.88-19,060.64-6,129.68

Finding the Fourth Proportional to 12,698.88, 19,060.64 and 6,129.68

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Solution

The fourth proportional to 12,698.88, 19,060.64 and 6,129.68 is: 9,200.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,698.88 : 19,060.64 = 6,129.68 : x
  2. Step 2: Convert to fraction form
    12,698.88/19,060.64 = 6,129.68/x
  3. Step 3: Cross multiply
    12,698.88x = 19,060.64 × 6,129.68
  4. Step 4: Simplify right side
    12,698.88x = 116,835,623.80
  5. Step 5: Solve for x
    x = 116,835,623.80/12,698.88
  6. Step 6: Final answer
    x = 9,200.47

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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.