Home / 13,688.45-20,531.86-3,827.51

Finding the Fourth Proportional to 13,688.45, 20,531.86 and 3,827.51

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Solution

The fourth proportional to 13,688.45, 20,531.86 and 3,827.51 is: 5,741.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.45 : 20,531.86 = 3,827.51 : x
  2. Step 2: Convert to fraction form
    13,688.45/20,531.86 = 3,827.51/x
  3. Step 3: Cross multiply
    13,688.45x = 20,531.86 × 3,827.51
  4. Step 4: Simplify right side
    13,688.45x = 78,585,787.24
  5. Step 5: Solve for x
    x = 78,585,787.24/13,688.45
  6. Step 6: Final answer
    x = 5,741.03

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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.