Home / 11,145.58-15,380.80-6,110.08

Finding the Fourth Proportional to 11,145.58, 15,380.80 and 6,110.08

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Solution

The fourth proportional to 11,145.58, 15,380.80 and 6,110.08 is: 8,431.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,145.58 : 15,380.80 = 6,110.08 : x
  2. Step 2: Convert to fraction form
    11,145.58/15,380.80 = 6,110.08/x
  3. Step 3: Cross multiply
    11,145.58x = 15,380.80 × 6,110.08
  4. Step 4: Simplify right side
    11,145.58x = 93,977,918.46
  5. Step 5: Solve for x
    x = 93,977,918.46/11,145.58
  6. Step 6: Final answer
    x = 8,431.86

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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.