Home / 20,674.47-28,530.98-11,243.23

Finding the Fourth Proportional to 20,674.47, 28,530.98 and 11,243.23

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Solution

The fourth proportional to 20,674.47, 28,530.98 and 11,243.23 is: 15,515.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.47 : 28,530.98 = 11,243.23 : x
  2. Step 2: Convert to fraction form
    20,674.47/28,530.98 = 11,243.23/x
  3. Step 3: Cross multiply
    20,674.47x = 28,530.98 × 11,243.23
  4. Step 4: Simplify right side
    20,674.47x = 320,780,370.27
  5. Step 5: Solve for x
    x = 320,780,370.27/20,674.47
  6. Step 6: Final answer
    x = 15,515.77

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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.