Home / 21,013.67-28,997.16-11,582.30

Finding the Fourth Proportional to 21,013.67, 28,997.16 and 11,582.30

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Solution

The fourth proportional to 21,013.67, 28,997.16 and 11,582.30 is: 15,982.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,013.67 : 28,997.16 = 11,582.30 : x
  2. Step 2: Convert to fraction form
    21,013.67/28,997.16 = 11,582.30/x
  3. Step 3: Cross multiply
    21,013.67x = 28,997.16 × 11,582.30
  4. Step 4: Simplify right side
    21,013.67x = 335,853,806.27
  5. Step 5: Solve for x
    x = 335,853,806.27/21,013.67
  6. Step 6: Final answer
    x = 15,982.63

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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.