Home / 13,657.76-18,847.50-7,689.41

Finding the Fourth Proportional to 13,657.76, 18,847.50 and 7,689.41

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Solution

The fourth proportional to 13,657.76, 18,847.50 and 7,689.41 is: 10,611.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,657.76 : 18,847.50 = 7,689.41 : x
  2. Step 2: Convert to fraction form
    13,657.76/18,847.50 = 7,689.41/x
  3. Step 3: Cross multiply
    13,657.76x = 18,847.50 × 7,689.41
  4. Step 4: Simplify right side
    13,657.76x = 144,926,154.98
  5. Step 5: Solve for x
    x = 144,926,154.98/13,657.76
  6. Step 6: Final answer
    x = 10,611.27

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Why These Related Problems?

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