Home / 20,513.84-28,309.05-11,082.38

Finding the Fourth Proportional to 20,513.84, 28,309.05 and 11,082.38

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Solution

The fourth proportional to 20,513.84, 28,309.05 and 11,082.38 is: 15,293.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.84 : 28,309.05 = 11,082.38 : x
  2. Step 2: Convert to fraction form
    20,513.84/28,309.05 = 11,082.38/x
  3. Step 3: Cross multiply
    20,513.84x = 28,309.05 × 11,082.38
  4. Step 4: Simplify right side
    20,513.84x = 313,731,507.99
  5. Step 5: Solve for x
    x = 313,731,507.99/20,513.84
  6. Step 6: Final answer
    x = 15,293.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.