Home / 20,513.13-30,769.70-6,473.20

Finding the Fourth Proportional to 20,513.13, 30,769.70 and 6,473.20

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Solution

The fourth proportional to 20,513.13, 30,769.70 and 6,473.20 is: 9,709.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.13 : 30,769.70 = 6,473.20 : x
  2. Step 2: Convert to fraction form
    20,513.13/30,769.70 = 6,473.20/x
  3. Step 3: Cross multiply
    20,513.13x = 30,769.70 × 6,473.20
  4. Step 4: Simplify right side
    20,513.13x = 199,178,422.04
  5. Step 5: Solve for x
    x = 199,178,422.04/20,513.13
  6. Step 6: Final answer
    x = 9,709.80

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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.