Home / 20,371.12-30,529.60-11,013.48

Finding the Fourth Proportional to 20,371.12, 30,529.60 and 11,013.48

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Solution

The fourth proportional to 20,371.12, 30,529.60 and 11,013.48 is: 16,505.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,371.12 : 30,529.60 = 11,013.48 : x
  2. Step 2: Convert to fraction form
    20,371.12/30,529.60 = 11,013.48/x
  3. Step 3: Cross multiply
    20,371.12x = 30,529.60 × 11,013.48
  4. Step 4: Simplify right side
    20,371.12x = 336,237,111.47
  5. Step 5: Solve for x
    x = 336,237,111.47/20,371.12
  6. Step 6: Final answer
    x = 16,505.58

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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.