Home / 20,383.05-28,125.90-11,308.29

Finding the Fourth Proportional to 20,383.05, 28,125.90 and 11,308.29

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Solution

The fourth proportional to 20,383.05, 28,125.90 and 11,308.29 is: 15,603.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383.05 : 28,125.90 = 11,308.29 : x
  2. Step 2: Convert to fraction form
    20,383.05/28,125.90 = 11,308.29/x
  3. Step 3: Cross multiply
    20,383.05x = 28,125.90 × 11,308.29
  4. Step 4: Simplify right side
    20,383.05x = 318,055,886.45
  5. Step 5: Solve for x
    x = 318,055,886.45/20,383.05
  6. Step 6: Final answer
    x = 15,603.94

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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.