Home / 20,530.23-30,795.30-4,947.86

Finding the Fourth Proportional to 20,530.23, 30,795.30 and 4,947.86

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Solution

The fourth proportional to 20,530.23, 30,795.30 and 4,947.86 is: 7,421.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.23 : 30,795.30 = 4,947.86 : x
  2. Step 2: Convert to fraction form
    20,530.23/30,795.30 = 4,947.86/x
  3. Step 3: Cross multiply
    20,530.23x = 30,795.30 × 4,947.86
  4. Step 4: Simplify right side
    20,530.23x = 152,370,799.08
  5. Step 5: Solve for x
    x = 152,370,799.08/20,530.23
  6. Step 6: Final answer
    x = 7,421.78

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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.