Home / 11,455.32-15,808.14-6,419.52

Finding the Fourth Proportional to 11,455.32, 15,808.14 and 6,419.52

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Solution

The fourth proportional to 11,455.32, 15,808.14 and 6,419.52 is: 8,858.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,455.32 : 15,808.14 = 6,419.52 : x
  2. Step 2: Convert to fraction form
    11,455.32/15,808.14 = 6,419.52/x
  3. Step 3: Cross multiply
    11,455.32x = 15,808.14 × 6,419.52
  4. Step 4: Simplify right side
    11,455.32x = 101,480,670.89
  5. Step 5: Solve for x
    x = 101,480,670.89/11,455.32
  6. Step 6: Final answer
    x = 8,858.82

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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.