Home / 28,558.12-39,408.66-15,980.44

Finding the Fourth Proportional to 28,558.12, 39,408.66 and 15,980.44

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Solution

The fourth proportional to 28,558.12, 39,408.66 and 15,980.44 is: 22,052.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,558.12 : 39,408.66 = 15,980.44 : x
  2. Step 2: Convert to fraction form
    28,558.12/39,408.66 = 15,980.44/x
  3. Step 3: Cross multiply
    28,558.12x = 39,408.66 × 15,980.44
  4. Step 4: Simplify right side
    28,558.12x = 629,767,726.61
  5. Step 5: Solve for x
    x = 629,767,726.61/28,558.12
  6. Step 6: Final answer
    x = 22,052.14

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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.