Home / 20,582.82-28,378.49-16,802.15

Finding the Fourth Proportional to 20,582.82, 28,378.49 and 16,802.15

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Solution

The fourth proportional to 20,582.82, 28,378.49 and 16,802.15 is: 23,165.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.82 : 28,378.49 = 16,802.15 : x
  2. Step 2: Convert to fraction form
    20,582.82/28,378.49 = 16,802.15/x
  3. Step 3: Cross multiply
    20,582.82x = 28,378.49 × 16,802.15
  4. Step 4: Simplify right side
    20,582.82x = 476,819,419.85
  5. Step 5: Solve for x
    x = 476,819,419.85/20,582.82
  6. Step 6: Final answer
    x = 23,165.89

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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.