Home / 11,121.06-15,347.16-6,928.50

Finding the Fourth Proportional to 11,121.06, 15,347.16 and 6,928.50

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Solution

The fourth proportional to 11,121.06, 15,347.16 and 6,928.50 is: 9,561.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.06 : 15,347.16 = 6,928.50 : x
  2. Step 2: Convert to fraction form
    11,121.06/15,347.16 = 6,928.50/x
  3. Step 3: Cross multiply
    11,121.06x = 15,347.16 × 6,928.50
  4. Step 4: Simplify right side
    11,121.06x = 106,332,798.06
  5. Step 5: Solve for x
    x = 106,332,798.06/11,121.06
  6. Step 6: Final answer
    x = 9,561.39

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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.