Home / 20,929.47-28,882.64-11,498.04

Finding the Fourth Proportional to 20,929.47, 28,882.64 and 11,498.04

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Solution

The fourth proportional to 20,929.47, 28,882.64 and 11,498.04 is: 15,867.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.47 : 28,882.64 = 11,498.04 : x
  2. Step 2: Convert to fraction form
    20,929.47/28,882.64 = 11,498.04/x
  3. Step 3: Cross multiply
    20,929.47x = 28,882.64 × 11,498.04
  4. Step 4: Simplify right side
    20,929.47x = 332,093,692.54
  5. Step 5: Solve for x
    x = 332,093,692.54/20,929.47
  6. Step 6: Final answer
    x = 15,867.28

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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.