Home / 21,004.44-28,979.94-12,502.29

Finding the Fourth Proportional to 21,004.44, 28,979.94 and 12,502.29

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Solution

The fourth proportional to 21,004.44, 28,979.94 and 12,502.29 is: 17,249.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.44 : 28,979.94 = 12,502.29 : x
  2. Step 2: Convert to fraction form
    21,004.44/28,979.94 = 12,502.29/x
  3. Step 3: Cross multiply
    21,004.44x = 28,979.94 × 12,502.29
  4. Step 4: Simplify right side
    21,004.44x = 362,315,614.06
  5. Step 5: Solve for x
    x = 362,315,614.06/21,004.44
  6. Step 6: Final answer
    x = 17,249.48

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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.