Home / 20,651.10-28,498.72-11,698.41

Finding the Fourth Proportional to 20,651.10, 28,498.72 and 11,698.41

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Solution

The fourth proportional to 20,651.10, 28,498.72 and 11,698.41 is: 16,143.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651.10 : 28,498.72 = 11,698.41 : x
  2. Step 2: Convert to fraction form
    20,651.10/28,498.72 = 11,698.41/x
  3. Step 3: Cross multiply
    20,651.10x = 28,498.72 × 11,698.41
  4. Step 4: Simplify right side
    20,651.10x = 333,389,732.04
  5. Step 5: Solve for x
    x = 333,389,732.04/20,651.10
  6. Step 6: Final answer
    x = 16,143.92

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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.