Home / 13,945.31-20,919.14-4,458.99

Finding the Fourth Proportional to 13,945.31, 20,919.14 and 4,458.99

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Solution

The fourth proportional to 13,945.31, 20,919.14 and 4,458.99 is: 6,688.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.31 : 20,919.14 = 4,458.99 : x
  2. Step 2: Convert to fraction form
    13,945.31/20,919.14 = 4,458.99/x
  3. Step 3: Cross multiply
    13,945.31x = 20,919.14 × 4,458.99
  4. Step 4: Simplify right side
    13,945.31x = 93,278,236.07
  5. Step 5: Solve for x
    x = 93,278,236.07/13,945.31
  6. Step 6: Final answer
    x = 6,688.86

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1.5x scale

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.