Home / 14,102.82-21,155.29-4,742.86

Finding the Fourth Proportional to 14,102.82, 21,155.29 and 4,742.86

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Solution

The fourth proportional to 14,102.82, 21,155.29 and 4,742.86 is: 7,114.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,102.82 : 21,155.29 = 4,742.86 : x
  2. Step 2: Convert to fraction form
    14,102.82/21,155.29 = 4,742.86/x
  3. Step 3: Cross multiply
    14,102.82x = 21,155.29 × 4,742.86
  4. Step 4: Simplify right side
    14,102.82x = 100,336,555.02
  5. Step 5: Solve for x
    x = 100,336,555.02/14,102.82
  6. Step 6: Final answer
    x = 7,114.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.