Home / 13,661.53-20,487.34-4,774.36

Finding the Fourth Proportional to 13,661.53, 20,487.34 and 4,774.36

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Solution

The fourth proportional to 13,661.53, 20,487.34 and 4,774.36 is: 7,159.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.53 : 20,487.34 = 4,774.36 : x
  2. Step 2: Convert to fraction form
    13,661.53/20,487.34 = 4,774.36/x
  3. Step 3: Cross multiply
    13,661.53x = 20,487.34 × 4,774.36
  4. Step 4: Simplify right side
    13,661.53x = 97,813,936.60
  5. Step 5: Solve for x
    x = 97,813,936.60/13,661.53
  6. Step 6: Final answer
    x = 7,159.81

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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.