Home / 11,436.44-15,779.70-7,242.28

Finding the Fourth Proportional to 11,436.44, 15,779.70 and 7,242.28

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Solution

The fourth proportional to 11,436.44, 15,779.70 and 7,242.28 is: 9,992.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,436.44 : 15,779.70 = 7,242.28 : x
  2. Step 2: Convert to fraction form
    11,436.44/15,779.70 = 7,242.28/x
  3. Step 3: Cross multiply
    11,436.44x = 15,779.70 × 7,242.28
  4. Step 4: Simplify right side
    11,436.44x = 114,281,005.72
  5. Step 5: Solve for x
    x = 114,281,005.72/11,436.44
  6. Step 6: Final answer
    x = 9,992.71

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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.