Home / 13,740.48-20,584.80-12,185.28

Finding the Fourth Proportional to 13,740.48, 20,584.80 and 12,185.28

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Solution

The fourth proportional to 13,740.48, 20,584.80 and 12,185.28 is: 18,254.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.48 : 20,584.80 = 12,185.28 : x
  2. Step 2: Convert to fraction form
    13,740.48/20,584.80 = 12,185.28/x
  3. Step 3: Cross multiply
    13,740.48x = 20,584.80 × 12,185.28
  4. Step 4: Simplify right side
    13,740.48x = 250,831,551.74
  5. Step 5: Solve for x
    x = 250,831,551.74/13,740.48
  6. Step 6: Final answer
    x = 18,254.93

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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.