Home / 11,130.21-15,360.43-6,414.79

Finding the Fourth Proportional to 11,130.21, 15,360.43 and 6,414.79

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Solution

The fourth proportional to 11,130.21, 15,360.43 and 6,414.79 is: 8,852.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,130.21 : 15,360.43 = 6,414.79 : x
  2. Step 2: Convert to fraction form
    11,130.21/15,360.43 = 6,414.79/x
  3. Step 3: Cross multiply
    11,130.21x = 15,360.43 × 6,414.79
  4. Step 4: Simplify right side
    11,130.21x = 98,533,932.76
  5. Step 5: Solve for x
    x = 98,533,932.76/11,130.21
  6. Step 6: Final answer
    x = 8,852.84

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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.