Home / 13,711.12-20,570.40-4,477.12

Finding the Fourth Proportional to 13,711.12, 20,570.40 and 4,477.12

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Solution

The fourth proportional to 13,711.12, 20,570.40 and 4,477.12 is: 6,716.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,711.12 : 20,570.40 = 4,477.12 : x
  2. Step 2: Convert to fraction form
    13,711.12/20,570.40 = 4,477.12/x
  3. Step 3: Cross multiply
    13,711.12x = 20,570.40 × 4,477.12
  4. Step 4: Simplify right side
    13,711.12x = 92,096,149.25
  5. Step 5: Solve for x
    x = 92,096,149.25/13,711.12
  6. Step 6: Final answer
    x = 6,716.89

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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.