Home / 12,890.76-19,336.56-6,134.91

Finding the Fourth Proportional to 12,890.76, 19,336.56 and 6,134.91

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Solution

The fourth proportional to 12,890.76, 19,336.56 and 6,134.91 is: 9,202.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.76 : 19,336.56 = 6,134.91 : x
  2. Step 2: Convert to fraction form
    12,890.76/19,336.56 = 6,134.91/x
  3. Step 3: Cross multiply
    12,890.76x = 19,336.56 × 6,134.91
  4. Step 4: Simplify right side
    12,890.76x = 118,628,055.31
  5. Step 5: Solve for x
    x = 118,628,055.31/12,890.76
  6. Step 6: Final answer
    x = 9,202.56

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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.