Home / 13,921.13-20,884.94-4,687.13

Finding the Fourth Proportional to 13,921.13, 20,884.94 and 4,687.13

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Solution

The fourth proportional to 13,921.13, 20,884.94 and 4,687.13 is: 7,031.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.13 : 20,884.94 = 4,687.13 : x
  2. Step 2: Convert to fraction form
    13,921.13/20,884.94 = 4,687.13/x
  3. Step 3: Cross multiply
    13,921.13x = 20,884.94 × 4,687.13
  4. Step 4: Simplify right side
    13,921.13x = 97,890,300.96
  5. Step 5: Solve for x
    x = 97,890,300.96/13,921.13
  6. Step 6: Final answer
    x = 7,031.78

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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.