Home / 13,954.28-20,931.59-4,093.76

Finding the Fourth Proportional to 13,954.28, 20,931.59 and 4,093.76

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Solution

The fourth proportional to 13,954.28, 20,931.59 and 4,093.76 is: 6,140.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,954.28 : 20,931.59 = 4,093.76 : x
  2. Step 2: Convert to fraction form
    13,954.28/20,931.59 = 4,093.76/x
  3. Step 3: Cross multiply
    13,954.28x = 20,931.59 × 4,093.76
  4. Step 4: Simplify right side
    13,954.28x = 85,688,780.75
  5. Step 5: Solve for x
    x = 85,688,780.75/13,954.28
  6. Step 6: Final answer
    x = 6,140.68

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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.