Home / 20,586.30-28,408.80-11,633.72

Finding the Fourth Proportional to 20,586.30, 28,408.80 and 11,633.72

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Solution

The fourth proportional to 20,586.30, 28,408.80 and 11,633.72 is: 16,054.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.30 : 28,408.80 = 11,633.72 : x
  2. Step 2: Convert to fraction form
    20,586.30/28,408.80 = 11,633.72/x
  3. Step 3: Cross multiply
    20,586.30x = 28,408.80 × 11,633.72
  4. Step 4: Simplify right side
    20,586.30x = 330,500,024.74
  5. Step 5: Solve for x
    x = 330,500,024.74/20,586.30
  6. Step 6: Final answer
    x = 16,054.37

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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.