Home / 20,895.30-28,835.96-11,463.86

Finding the Fourth Proportional to 20,895.30, 28,835.96 and 11,463.86

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Solution

The fourth proportional to 20,895.30, 28,835.96 and 11,463.86 is: 15,820.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.30 : 28,835.96 = 11,463.86 : x
  2. Step 2: Convert to fraction form
    20,895.30/28,835.96 = 11,463.86/x
  3. Step 3: Cross multiply
    20,895.30x = 28,835.96 × 11,463.86
  4. Step 4: Simplify right side
    20,895.30x = 330,571,408.41
  5. Step 5: Solve for x
    x = 330,571,408.41/20,895.30
  6. Step 6: Final answer
    x = 15,820.37

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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.