Home / 15,788.44-21,789.50-11,015.31

Finding the Fourth Proportional to 15,788.44, 21,789.50 and 11,015.31

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Solution

The fourth proportional to 15,788.44, 21,789.50 and 11,015.31 is: 15,202.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,788.44 : 21,789.50 = 11,015.31 : x
  2. Step 2: Convert to fraction form
    15,788.44/21,789.50 = 11,015.31/x
  3. Step 3: Cross multiply
    15,788.44x = 21,789.50 × 11,015.31
  4. Step 4: Simplify right side
    15,788.44x = 240,018,097.25
  5. Step 5: Solve for x
    x = 240,018,097.25/15,788.44
  6. Step 6: Final answer
    x = 15,202.14

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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.