Home / 28,989.22-39,987.44-19,166.43

Finding the Fourth Proportional to 28,989.22, 39,987.44 and 19,166.43

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Solution

The fourth proportional to 28,989.22, 39,987.44 and 19,166.43 is: 26,437.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,989.22 : 39,987.44 = 19,166.43 : x
  2. Step 2: Convert to fraction form
    28,989.22/39,987.44 = 19,166.43/x
  3. Step 3: Cross multiply
    28,989.22x = 39,987.44 × 19,166.43
  4. Step 4: Simplify right side
    28,989.22x = 766,416,297.80
  5. Step 5: Solve for x
    x = 766,416,297.80/28,989.22
  6. Step 6: Final answer
    x = 26,437.98

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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.