Home / 20,129.58-27,749.25-14,142.33

Finding the Fourth Proportional to 20,129.58, 27,749.25 and 14,142.33

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Solution

The fourth proportional to 20,129.58, 27,749.25 and 14,142.33 is: 19,495.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129.58 : 27,749.25 = 14,142.33 : x
  2. Step 2: Convert to fraction form
    20,129.58/27,749.25 = 14,142.33/x
  3. Step 3: Cross multiply
    20,129.58x = 27,749.25 × 14,142.33
  4. Step 4: Simplify right side
    20,129.58x = 392,439,050.75
  5. Step 5: Solve for x
    x = 392,439,050.75/20,129.58
  6. Step 6: Final answer
    x = 19,495.64

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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.