Home / 20,346.75-28,091.61-13,971.29

Finding the Fourth Proportional to 20,346.75, 28,091.61 and 13,971.29

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Solution

The fourth proportional to 20,346.75, 28,091.61 and 13,971.29 is: 19,289.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346.75 : 28,091.61 = 13,971.29 : x
  2. Step 2: Convert to fraction form
    20,346.75/28,091.61 = 13,971.29/x
  3. Step 3: Cross multiply
    20,346.75x = 28,091.61 × 13,971.29
  4. Step 4: Simplify right side
    20,346.75x = 392,475,889.42
  5. Step 5: Solve for x
    x = 392,475,889.42/20,346.75
  6. Step 6: Final answer
    x = 19,289.37

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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.