Home / 20,716.70-28,579.25-14,004.68

Finding the Fourth Proportional to 20,716.70, 28,579.25 and 14,004.68

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Solution

The fourth proportional to 20,716.70, 28,579.25 and 14,004.68 is: 19,319.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.70 : 28,579.25 = 14,004.68 : x
  2. Step 2: Convert to fraction form
    20,716.70/28,579.25 = 14,004.68/x
  3. Step 3: Cross multiply
    20,716.70x = 28,579.25 × 14,004.68
  4. Step 4: Simplify right side
    20,716.70x = 400,243,250.89
  5. Step 5: Solve for x
    x = 400,243,250.89/20,716.70
  6. Step 6: Final answer
    x = 19,319.84

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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.