Home / 20,403.60-30,581.70-11,644.66

Finding the Fourth Proportional to 20,403.60, 30,581.70 and 11,644.66

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Solution

The fourth proportional to 20,403.60, 30,581.70 and 11,644.66 is: 17,453.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,403.60 : 30,581.70 = 11,644.66 : x
  2. Step 2: Convert to fraction form
    20,403.60/30,581.70 = 11,644.66/x
  3. Step 3: Cross multiply
    20,403.60x = 30,581.70 × 11,644.66
  4. Step 4: Simplify right side
    20,403.60x = 356,113,558.78
  5. Step 5: Solve for x
    x = 356,113,558.78/20,403.60
  6. Step 6: Final answer
    x = 17,453.47

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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.