Home / 21,008.16-28,990.96-11,576.48

Finding the Fourth Proportional to 21,008.16, 28,990.96 and 11,576.48

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Solution

The fourth proportional to 21,008.16, 28,990.96 and 11,576.48 is: 15,975.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008.16 : 28,990.96 = 11,576.48 : x
  2. Step 2: Convert to fraction form
    21,008.16/28,990.96 = 11,576.48/x
  3. Step 3: Cross multiply
    21,008.16x = 28,990.96 × 11,576.48
  4. Step 4: Simplify right side
    21,008.16x = 335,613,268.62
  5. Step 5: Solve for x
    x = 335,613,268.62/21,008.16
  6. Step 6: Final answer
    x = 15,975.38

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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.