Home / 13,911.18-20,880.43-10,202.84

Finding the Fourth Proportional to 13,911.18, 20,880.43 and 10,202.84

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Solution

The fourth proportional to 13,911.18, 20,880.43 and 10,202.84 is: 15,314.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,911.18 : 20,880.43 = 10,202.84 : x
  2. Step 2: Convert to fraction form
    13,911.18/20,880.43 = 10,202.84/x
  3. Step 3: Cross multiply
    13,911.18x = 20,880.43 × 10,202.84
  4. Step 4: Simplify right side
    13,911.18x = 213,039,634.81
  5. Step 5: Solve for x
    x = 213,039,634.81/13,911.18
  6. Step 6: Final answer
    x = 15,314.28

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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.