Home / 20,592.63-28,415.21-13,419.27

Finding the Fourth Proportional to 20,592.63, 28,415.21 and 13,419.27

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Solution

The fourth proportional to 20,592.63, 28,415.21 and 13,419.27 is: 18,516.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,592.63 : 28,415.21 = 13,419.27 : x
  2. Step 2: Convert to fraction form
    20,592.63/28,415.21 = 13,419.27/x
  3. Step 3: Cross multiply
    20,592.63x = 28,415.21 × 13,419.27
  4. Step 4: Simplify right side
    20,592.63x = 381,311,308.00
  5. Step 5: Solve for x
    x = 381,311,308.00/20,592.63
  6. Step 6: Final answer
    x = 18,516.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.