Home / 19,871.38-27,450.48-18,821.62

Finding the Fourth Proportional to 19,871.38, 27,450.48 and 18,821.62

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Solution

The fourth proportional to 19,871.38, 27,450.48 and 18,821.62 is: 26,000.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,871.38 : 27,450.48 = 18,821.62 : x
  2. Step 2: Convert to fraction form
    19,871.38/27,450.48 = 18,821.62/x
  3. Step 3: Cross multiply
    19,871.38x = 27,450.48 × 18,821.62
  4. Step 4: Simplify right side
    19,871.38x = 516,662,503.38
  5. Step 5: Solve for x
    x = 516,662,503.38/19,871.38
  6. Step 6: Final answer
    x = 26,000.33

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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.