Home / 13,871.85-20,783.55-11,546.80

Finding the Fourth Proportional to 13,871.85, 20,783.55 and 11,546.80

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Solution

The fourth proportional to 13,871.85, 20,783.55 and 11,546.80 is: 17,300.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.85 : 20,783.55 = 11,546.80 : x
  2. Step 2: Convert to fraction form
    13,871.85/20,783.55 = 11,546.80/x
  3. Step 3: Cross multiply
    13,871.85x = 20,783.55 × 11,546.80
  4. Step 4: Simplify right side
    13,871.85x = 239,983,421.53
  5. Step 5: Solve for x
    x = 239,983,421.53/13,871.85
  6. Step 6: Final answer
    x = 17,300.03

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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.