Home / 20,214.71-30,327.54-11,455.78

Finding the Fourth Proportional to 20,214.71, 30,327.54 and 11,455.78

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Solution

The fourth proportional to 20,214.71, 30,327.54 and 11,455.78 is: 17,186.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,214.71 : 30,327.54 = 11,455.78 : x
  2. Step 2: Convert to fraction form
    20,214.71/30,327.54 = 11,455.78/x
  3. Step 3: Cross multiply
    20,214.71x = 30,327.54 × 11,455.78
  4. Step 4: Simplify right side
    20,214.71x = 347,425,550.36
  5. Step 5: Solve for x
    x = 347,425,550.36/20,214.71
  6. Step 6: Final answer
    x = 17,186.77

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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.