Home / 20,580.21-28,411.29-13,034.43

Finding the Fourth Proportional to 20,580.21, 28,411.29 and 13,034.43

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Solution

The fourth proportional to 20,580.21, 28,411.29 and 13,034.43 is: 17,994.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.21 : 28,411.29 = 13,034.43 : x
  2. Step 2: Convert to fraction form
    20,580.21/28,411.29 = 13,034.43/x
  3. Step 3: Cross multiply
    20,580.21x = 28,411.29 × 13,034.43
  4. Step 4: Simplify right side
    20,580.21x = 370,324,970.71
  5. Step 5: Solve for x
    x = 370,324,970.71/20,580.21
  6. Step 6: Final answer
    x = 17,994.23

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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.