Home / 20,651.40-28,498.62-11,698.92

Finding the Fourth Proportional to 20,651.40, 28,498.62 and 11,698.92

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Solution

The fourth proportional to 20,651.40, 28,498.62 and 11,698.92 is: 16,144.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651.40 : 28,498.62 = 11,698.92 : x
  2. Step 2: Convert to fraction form
    20,651.40/28,498.62 = 11,698.92/x
  3. Step 3: Cross multiply
    20,651.40x = 28,498.62 × 11,698.92
  4. Step 4: Simplify right side
    20,651.40x = 333,403,075.49
  5. Step 5: Solve for x
    x = 333,403,075.49/20,651.40
  6. Step 6: Final answer
    x = 16,144.33

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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.