Home / 13,811.76-20,720.88-5,046.84

Finding the Fourth Proportional to 13,811.76, 20,720.88 and 5,046.84

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Solution

The fourth proportional to 13,811.76, 20,720.88 and 5,046.84 is: 7,571.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.76 : 20,720.88 = 5,046.84 : x
  2. Step 2: Convert to fraction form
    13,811.76/20,720.88 = 5,046.84/x
  3. Step 3: Cross multiply
    13,811.76x = 20,720.88 × 5,046.84
  4. Step 4: Simplify right side
    13,811.76x = 104,574,966.02
  5. Step 5: Solve for x
    x = 104,574,966.02/13,811.76
  6. Step 6: Final answer
    x = 7,571.44

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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.