Home / 13,520.79-20,283.11-4,161.59

Finding the Fourth Proportional to 13,520.79, 20,283.11 and 4,161.59

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Solution

The fourth proportional to 13,520.79, 20,283.11 and 4,161.59 is: 6,242.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.79 : 20,283.11 = 4,161.59 : x
  2. Step 2: Convert to fraction form
    13,520.79/20,283.11 = 4,161.59/x
  3. Step 3: Cross multiply
    13,520.79x = 20,283.11 × 4,161.59
  4. Step 4: Simplify right side
    13,520.79x = 84,409,987.74
  5. Step 5: Solve for x
    x = 84,409,987.74/13,520.79
  6. Step 6: Final answer
    x = 6,242.98

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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.