Home / 20,639.04-30,958.64-6,788

Finding the Fourth Proportional to 20,639.04, 30,958.64 and 6,788

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Solution

The fourth proportional to 20,639.04, 30,958.64 and 6,788 is: 10,182.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,639.04 : 30,958.64 = 6,788 : x
  2. Step 2: Convert to fraction form
    20,639.04/30,958.64 = 6,788/x
  3. Step 3: Cross multiply
    20,639.04x = 30,958.64 × 6,788
  4. Step 4: Simplify right side
    20,639.04x = 210,147,248.32
  5. Step 5: Solve for x
    x = 210,147,248.32/20,639.04
  6. Step 6: Final answer
    x = 10,182.03

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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.