Home / 11,289.76-15,583.11-6,812.75

Finding the Fourth Proportional to 11,289.76, 15,583.11 and 6,812.75

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Solution

The fourth proportional to 11,289.76, 15,583.11 and 6,812.75 is: 9,403.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,289.76 : 15,583.11 = 6,812.75 : x
  2. Step 2: Convert to fraction form
    11,289.76/15,583.11 = 6,812.75/x
  3. Step 3: Cross multiply
    11,289.76x = 15,583.11 × 6,812.75
  4. Step 4: Simplify right side
    11,289.76x = 106,163,832.65
  5. Step 5: Solve for x
    x = 106,163,832.65/11,289.76
  6. Step 6: Final answer
    x = 9,403.55

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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.