Home / 13,543.56-20,309.94-5,218.95

Finding the Fourth Proportional to 13,543.56, 20,309.94 and 5,218.95

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Solution

The fourth proportional to 13,543.56, 20,309.94 and 5,218.95 is: 7,826.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.56 : 20,309.94 = 5,218.95 : x
  2. Step 2: Convert to fraction form
    13,543.56/20,309.94 = 5,218.95/x
  3. Step 3: Cross multiply
    13,543.56x = 20,309.94 × 5,218.95
  4. Step 4: Simplify right side
    13,543.56x = 105,996,561.36
  5. Step 5: Solve for x
    x = 105,996,561.36/13,543.56
  6. Step 6: Final answer
    x = 7,826.34

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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.