Home / 11,455.16-15,808.11-6,419.42

Finding the Fourth Proportional to 11,455.16, 15,808.11 and 6,419.42

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Solution

The fourth proportional to 11,455.16, 15,808.11 and 6,419.42 is: 8,858.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,455.16 : 15,808.11 = 6,419.42 : x
  2. Step 2: Convert to fraction form
    11,455.16/15,808.11 = 6,419.42/x
  3. Step 3: Cross multiply
    11,455.16x = 15,808.11 × 6,419.42
  4. Step 4: Simplify right side
    11,455.16x = 101,478,818.46
  5. Step 5: Solve for x
    x = 101,478,818.46/11,455.16
  6. Step 6: Final answer
    x = 8,858.79

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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.