Home / 13,688.10-20,537.55-5,366.70

Finding the Fourth Proportional to 13,688.10, 20,537.55 and 5,366.70

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Solution

The fourth proportional to 13,688.10, 20,537.55 and 5,366.70 is: 8,052.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.10 : 20,537.55 = 5,366.70 : x
  2. Step 2: Convert to fraction form
    13,688.10/20,537.55 = 5,366.70/x
  3. Step 3: Cross multiply
    13,688.10x = 20,537.55 × 5,366.70
  4. Step 4: Simplify right side
    13,688.10x = 110,218,869.59
  5. Step 5: Solve for x
    x = 110,218,869.59/13,688.10
  6. Step 6: Final answer
    x = 8,052.17

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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.