Home / 14,102.87-21,155.33-4,742.85

Finding the Fourth Proportional to 14,102.87, 21,155.33 and 4,742.85

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Solution

The fourth proportional to 14,102.87, 21,155.33 and 4,742.85 is: 7,114.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,102.87 : 21,155.33 = 4,742.85 : x
  2. Step 2: Convert to fraction form
    14,102.87/21,155.33 = 4,742.85/x
  3. Step 3: Cross multiply
    14,102.87x = 21,155.33 × 4,742.85
  4. Step 4: Simplify right side
    14,102.87x = 100,336,533.18
  5. Step 5: Solve for x
    x = 100,336,533.18/14,102.87
  6. Step 6: Final answer
    x = 7,114.62

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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.