Home / 13,878.96-20,836.94-11,812.25

Finding the Fourth Proportional to 13,878.96, 20,836.94 and 11,812.25

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Solution

The fourth proportional to 13,878.96, 20,836.94 and 11,812.25 is: 17,734.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878.96 : 20,836.94 = 11,812.25 : x
  2. Step 2: Convert to fraction form
    13,878.96/20,836.94 = 11,812.25/x
  3. Step 3: Cross multiply
    13,878.96x = 20,836.94 × 11,812.25
  4. Step 4: Simplify right side
    13,878.96x = 246,130,981.27
  5. Step 5: Solve for x
    x = 246,130,981.27/13,878.96
  6. Step 6: Final answer
    x = 17,734.11

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1.5x scale

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.