Home / 11,580.44-15,972.54-9,990.14

Finding the Fourth Proportional to 11,580.44, 15,972.54 and 9,990.14

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Solution

The fourth proportional to 11,580.44, 15,972.54 and 9,990.14 is: 13,779.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,580.44 : 15,972.54 = 9,990.14 : x
  2. Step 2: Convert to fraction form
    11,580.44/15,972.54 = 9,990.14/x
  3. Step 3: Cross multiply
    11,580.44x = 15,972.54 × 9,990.14
  4. Step 4: Simplify right side
    11,580.44x = 159,567,910.76
  5. Step 5: Solve for x
    x = 159,567,910.76/11,580.44
  6. Step 6: Final answer
    x = 13,779.09

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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.