Home / 13,818.20-20,721.38-5,264.01

Finding the Fourth Proportional to 13,818.20, 20,721.38 and 5,264.01

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Solution

The fourth proportional to 13,818.20, 20,721.38 and 5,264.01 is: 7,893.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.20 : 20,721.38 = 5,264.01 : x
  2. Step 2: Convert to fraction form
    13,818.20/20,721.38 = 5,264.01/x
  3. Step 3: Cross multiply
    13,818.20x = 20,721.38 × 5,264.01
  4. Step 4: Simplify right side
    13,818.20x = 109,077,525.21
  5. Step 5: Solve for x
    x = 109,077,525.21/13,818.20
  6. Step 6: Final answer
    x = 7,893.76

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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.