Home / 20,443.79-30,665.68-6,403.93

Finding the Fourth Proportional to 20,443.79, 30,665.68 and 6,403.93

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Solution

The fourth proportional to 20,443.79, 30,665.68 and 6,403.93 is: 9,605.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.79 : 30,665.68 = 6,403.93 : x
  2. Step 2: Convert to fraction form
    20,443.79/30,665.68 = 6,403.93/x
  3. Step 3: Cross multiply
    20,443.79x = 30,665.68 × 6,403.93
  4. Step 4: Simplify right side
    20,443.79x = 196,380,836.10
  5. Step 5: Solve for x
    x = 196,380,836.10/20,443.79
  6. Step 6: Final answer
    x = 9,605.89

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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.