Home / 11,422.18-15,762.67-6,386.61

Finding the Fourth Proportional to 11,422.18, 15,762.67 and 6,386.61

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Solution

The fourth proportional to 11,422.18, 15,762.67 and 6,386.61 is: 8,813.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,422.18 : 15,762.67 = 6,386.61 : x
  2. Step 2: Convert to fraction form
    11,422.18/15,762.67 = 6,386.61/x
  3. Step 3: Cross multiply
    11,422.18x = 15,762.67 × 6,386.61
  4. Step 4: Simplify right side
    11,422.18x = 100,670,025.85
  5. Step 5: Solve for x
    x = 100,670,025.85/11,422.18
  6. Step 6: Final answer
    x = 8,813.56

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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.