Home / 20,800.46-28,704.85-11,369.02

Finding the Fourth Proportional to 20,800.46, 28,704.85 and 11,369.02

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Solution

The fourth proportional to 20,800.46, 28,704.85 and 11,369.02 is: 15,689.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,800.46 : 28,704.85 = 11,369.02 : x
  2. Step 2: Convert to fraction form
    20,800.46/28,704.85 = 11,369.02/x
  3. Step 3: Cross multiply
    20,800.46x = 28,704.85 × 11,369.02
  4. Step 4: Simplify right side
    20,800.46x = 326,345,885.14
  5. Step 5: Solve for x
    x = 326,345,885.14/20,800.46
  6. Step 6: Final answer
    x = 15,689.36

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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.