Home / 11,455.06-15,806.92-6,419.50

Finding the Fourth Proportional to 11,455.06, 15,806.92 and 6,419.50

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Solution

The fourth proportional to 11,455.06, 15,806.92 and 6,419.50 is: 8,858.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,455.06 : 15,806.92 = 6,419.50 : x
  2. Step 2: Convert to fraction form
    11,455.06/15,806.92 = 6,419.50/x
  3. Step 3: Cross multiply
    11,455.06x = 15,806.92 × 6,419.50
  4. Step 4: Simplify right side
    11,455.06x = 101,472,522.94
  5. Step 5: Solve for x
    x = 101,472,522.94/11,455.06
  6. Step 6: Final answer
    x = 8,858.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.