Home / 13,543.88-20,316-4,183.78

Finding the Fourth Proportional to 13,543.88, 20,316 and 4,183.78

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Solution

The fourth proportional to 13,543.88, 20,316 and 4,183.78 is: 6,275.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.88 : 20,316 = 4,183.78 : x
  2. Step 2: Convert to fraction form
    13,543.88/20,316 = 4,183.78/x
  3. Step 3: Cross multiply
    13,543.88x = 20,316 × 4,183.78
  4. Step 4: Simplify right side
    13,543.88x = 84,997,674.48
  5. Step 5: Solve for x
    x = 84,997,674.48/13,543.88
  6. Step 6: Final answer
    x = 6,275.73

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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.