Home / 13,730.86-20,597.40-3,870.94

Finding the Fourth Proportional to 13,730.86, 20,597.40 and 3,870.94

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Solution

The fourth proportional to 13,730.86, 20,597.40 and 3,870.94 is: 5,806.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.86 : 20,597.40 = 3,870.94 : x
  2. Step 2: Convert to fraction form
    13,730.86/20,597.40 = 3,870.94/x
  3. Step 3: Cross multiply
    13,730.86x = 20,597.40 × 3,870.94
  4. Step 4: Simplify right side
    13,730.86x = 79,731,299.56
  5. Step 5: Solve for x
    x = 79,731,299.56/13,730.86
  6. Step 6: Final answer
    x = 5,806.72

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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.