Home / 20,543.58-30,815.55-4,961.34

Finding the Fourth Proportional to 20,543.58, 30,815.55 and 4,961.34

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Solution

The fourth proportional to 20,543.58, 30,815.55 and 4,961.34 is: 7,442.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.58 : 30,815.55 = 4,961.34 : x
  2. Step 2: Convert to fraction form
    20,543.58/30,815.55 = 4,961.34/x
  3. Step 3: Cross multiply
    20,543.58x = 30,815.55 × 4,961.34
  4. Step 4: Simplify right side
    20,543.58x = 152,886,420.84
  5. Step 5: Solve for x
    x = 152,886,420.84/20,543.58
  6. Step 6: Final answer
    x = 7,442.05

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1.5x scale

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.