Home / 20,400.64-30,610.14-11,029.70

Finding the Fourth Proportional to 20,400.64, 30,610.14 and 11,029.70

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Solution

The fourth proportional to 20,400.64, 30,610.14 and 11,029.70 is: 16,549.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400.64 : 30,610.14 = 11,029.70 : x
  2. Step 2: Convert to fraction form
    20,400.64/30,610.14 = 11,029.70/x
  3. Step 3: Cross multiply
    20,400.64x = 30,610.14 × 11,029.70
  4. Step 4: Simplify right side
    20,400.64x = 337,620,661.16
  5. Step 5: Solve for x
    x = 337,620,661.16/20,400.64
  6. Step 6: Final answer
    x = 16,549.51

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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.