Home / 13,820.94-20,729.30-4,459.68

Finding the Fourth Proportional to 13,820.94, 20,729.30 and 4,459.68

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Solution

The fourth proportional to 13,820.94, 20,729.30 and 4,459.68 is: 6,688.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.94 : 20,729.30 = 4,459.68 : x
  2. Step 2: Convert to fraction form
    13,820.94/20,729.30 = 4,459.68/x
  3. Step 3: Cross multiply
    13,820.94x = 20,729.30 × 4,459.68
  4. Step 4: Simplify right side
    13,820.94x = 92,446,022.33
  5. Step 5: Solve for x
    x = 92,446,022.33/13,820.94
  6. Step 6: Final answer
    x = 6,688.84

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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.