Home / 20,543.77-30,815.58-4,961.39

Finding the Fourth Proportional to 20,543.77, 30,815.58 and 4,961.39

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Solution

The fourth proportional to 20,543.77, 30,815.58 and 4,961.39 is: 7,442.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.77 : 30,815.58 = 4,961.39 : x
  2. Step 2: Convert to fraction form
    20,543.77/30,815.58 = 4,961.39/x
  3. Step 3: Cross multiply
    20,543.77x = 30,815.58 × 4,961.39
  4. Step 4: Simplify right side
    20,543.77x = 152,888,110.46
  5. Step 5: Solve for x
    x = 152,888,110.46/20,543.77
  6. Step 6: Final answer
    x = 7,442.07

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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.