Home / 20,913.68-28,861-11,482.32

Finding the Fourth Proportional to 20,913.68, 28,861 and 11,482.32

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Solution

The fourth proportional to 20,913.68, 28,861 and 11,482.32 is: 15,845.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913.68 : 28,861 = 11,482.32 : x
  2. Step 2: Convert to fraction form
    20,913.68/28,861 = 11,482.32/x
  3. Step 3: Cross multiply
    20,913.68x = 28,861 × 11,482.32
  4. Step 4: Simplify right side
    20,913.68x = 331,391,237.52
  5. Step 5: Solve for x
    x = 331,391,237.52/20,913.68
  6. Step 6: Final answer
    x = 15,845.67

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.