Home / 13,821.10-20,731.74-5,052.40

Finding the Fourth Proportional to 13,821.10, 20,731.74 and 5,052.40

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Solution

The fourth proportional to 13,821.10, 20,731.74 and 5,052.40 is: 7,578.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.10 : 20,731.74 = 5,052.40 : x
  2. Step 2: Convert to fraction form
    13,821.10/20,731.74 = 5,052.40/x
  3. Step 3: Cross multiply
    13,821.10x = 20,731.74 × 5,052.40
  4. Step 4: Simplify right side
    13,821.10x = 104,745,043.18
  5. Step 5: Solve for x
    x = 104,745,043.18/13,821.10
  6. Step 6: Final answer
    x = 7,578.63

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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.