Home / 20,305.84-28,023.36-11,353.38

Finding the Fourth Proportional to 20,305.84, 28,023.36 and 11,353.38

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Solution

The fourth proportional to 20,305.84, 28,023.36 and 11,353.38 is: 15,668.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,305.84 : 28,023.36 = 11,353.38 : x
  2. Step 2: Convert to fraction form
    20,305.84/28,023.36 = 11,353.38/x
  3. Step 3: Cross multiply
    20,305.84x = 28,023.36 × 11,353.38
  4. Step 4: Simplify right side
    20,305.84x = 318,159,854.96
  5. Step 5: Solve for x
    x = 318,159,854.96/20,305.84
  6. Step 6: Final answer
    x = 15,668.39

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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.