Home / 20,916.09-31,373.73-5,333.85

Finding the Fourth Proportional to 20,916.09, 31,373.73 and 5,333.85

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Solution

The fourth proportional to 20,916.09, 31,373.73 and 5,333.85 is: 8,000.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.09 : 31,373.73 = 5,333.85 : x
  2. Step 2: Convert to fraction form
    20,916.09/31,373.73 = 5,333.85/x
  3. Step 3: Cross multiply
    20,916.09x = 31,373.73 × 5,333.85
  4. Step 4: Simplify right side
    20,916.09x = 167,342,769.76
  5. Step 5: Solve for x
    x = 167,342,769.76/20,916.09
  6. Step 6: Final answer
    x = 8,000.67

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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.