Home / 15,301.44-21,121.56-9,019.08

Finding the Fourth Proportional to 15,301.44, 21,121.56 and 9,019.08

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Solution

The fourth proportional to 15,301.44, 21,121.56 and 9,019.08 is: 12,449.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,301.44 : 21,121.56 = 9,019.08 : x
  2. Step 2: Convert to fraction form
    15,301.44/21,121.56 = 9,019.08/x
  3. Step 3: Cross multiply
    15,301.44x = 21,121.56 × 9,019.08
  4. Step 4: Simplify right side
    15,301.44x = 190,497,039.36
  5. Step 5: Solve for x
    x = 190,497,039.36/15,301.44
  6. Step 6: Final answer
    x = 12,449.62

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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.