Home / 20,352.13-28,086.23-13,274.49

Finding the Fourth Proportional to 20,352.13, 28,086.23 and 13,274.49

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Solution

The fourth proportional to 20,352.13, 28,086.23 and 13,274.49 is: 18,318.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,352.13 : 28,086.23 = 13,274.49 : x
  2. Step 2: Convert to fraction form
    20,352.13/28,086.23 = 13,274.49/x
  3. Step 3: Cross multiply
    20,352.13x = 28,086.23 × 13,274.49
  4. Step 4: Simplify right side
    20,352.13x = 372,830,379.27
  5. Step 5: Solve for x
    x = 372,830,379.27/20,352.13
  6. Step 6: Final answer
    x = 18,318.99

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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.