Home / 20,592.38-28,420.53-13,039.41

Finding the Fourth Proportional to 20,592.38, 28,420.53 and 13,039.41

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Solution

The fourth proportional to 20,592.38, 28,420.53 and 13,039.41 is: 17,996.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,592.38 : 28,420.53 = 13,039.41 : x
  2. Step 2: Convert to fraction form
    20,592.38/28,420.53 = 13,039.41/x
  3. Step 3: Cross multiply
    20,592.38x = 28,420.53 × 13,039.41
  4. Step 4: Simplify right side
    20,592.38x = 370,586,943.09
  5. Step 5: Solve for x
    x = 370,586,943.09/20,592.38
  6. Step 6: Final answer
    x = 17,996.31

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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.