Home / 21,013.94-28,997.53-11,582.51

Finding the Fourth Proportional to 21,013.94, 28,997.53 and 11,582.51

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Solution

The fourth proportional to 21,013.94, 28,997.53 and 11,582.51 is: 15,982.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,013.94 : 28,997.53 = 11,582.51 : x
  2. Step 2: Convert to fraction form
    21,013.94/28,997.53 = 11,582.51/x
  3. Step 3: Cross multiply
    21,013.94x = 28,997.53 × 11,582.51
  4. Step 4: Simplify right side
    21,013.94x = 335,864,007.26
  5. Step 5: Solve for x
    x = 335,864,007.26/21,013.94
  6. Step 6: Final answer
    x = 15,982.91

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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.