Home / 20,310.12-28,027.37-11,358.45

Finding the Fourth Proportional to 20,310.12, 28,027.37 and 11,358.45

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Solution

The fourth proportional to 20,310.12, 28,027.37 and 11,358.45 is: 15,674.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,310.12 : 28,027.37 = 11,358.45 : x
  2. Step 2: Convert to fraction form
    20,310.12/28,027.37 = 11,358.45/x
  3. Step 3: Cross multiply
    20,310.12x = 28,027.37 × 11,358.45
  4. Step 4: Simplify right side
    20,310.12x = 318,347,509.17
  5. Step 5: Solve for x
    x = 318,347,509.17/20,310.12
  6. Step 6: Final answer
    x = 15,674.33

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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.