Home / 20,460.12-30,687.90-6,419.58

Finding the Fourth Proportional to 20,460.12, 30,687.90 and 6,419.58

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Solution

The fourth proportional to 20,460.12, 30,687.90 and 6,419.58 is: 9,628.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,460.12 : 30,687.90 = 6,419.58 : x
  2. Step 2: Convert to fraction form
    20,460.12/30,687.90 = 6,419.58/x
  3. Step 3: Cross multiply
    20,460.12x = 30,687.90 × 6,419.58
  4. Step 4: Simplify right side
    20,460.12x = 197,003,429.08
  5. Step 5: Solve for x
    x = 197,003,429.08/20,460.12
  6. Step 6: Final answer
    x = 9,628.65

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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.