Home / 11,189.40-15,442.55-6,409.72

Finding the Fourth Proportional to 11,189.40, 15,442.55 and 6,409.72

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Solution

The fourth proportional to 11,189.40, 15,442.55 and 6,409.72 is: 8,846.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,189.40 : 15,442.55 = 6,409.72 : x
  2. Step 2: Convert to fraction form
    11,189.40/15,442.55 = 6,409.72/x
  3. Step 3: Cross multiply
    11,189.40x = 15,442.55 × 6,409.72
  4. Step 4: Simplify right side
    11,189.40x = 98,982,421.59
  5. Step 5: Solve for x
    x = 98,982,421.59/11,189.40
  6. Step 6: Final answer
    x = 8,846.09

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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.