Home / 20,582.10-30,872.88-4,999.68

Finding the Fourth Proportional to 20,582.10, 30,872.88 and 4,999.68

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Solution

The fourth proportional to 20,582.10, 30,872.88 and 4,999.68 is: 7,499.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.10 : 30,872.88 = 4,999.68 : x
  2. Step 2: Convert to fraction form
    20,582.10/30,872.88 = 4,999.68/x
  3. Step 3: Cross multiply
    20,582.10x = 30,872.88 × 4,999.68
  4. Step 4: Simplify right side
    20,582.10x = 154,354,520.68
  5. Step 5: Solve for x
    x = 154,354,520.68/20,582.10
  6. Step 6: Final answer
    x = 7,499.45

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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.