Home / 20,583.81-28,418.90-16,816.09

Finding the Fourth Proportional to 20,583.81, 28,418.90 and 16,816.09

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Solution

The fourth proportional to 20,583.81, 28,418.90 and 16,816.09 is: 23,217.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,583.81 : 28,418.90 = 16,816.09 : x
  2. Step 2: Convert to fraction form
    20,583.81/28,418.90 = 16,816.09/x
  3. Step 3: Cross multiply
    20,583.81x = 28,418.90 × 16,816.09
  4. Step 4: Simplify right side
    20,583.81x = 477,894,780.10
  5. Step 5: Solve for x
    x = 477,894,780.10/20,583.81
  6. Step 6: Final answer
    x = 23,217.02

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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.