Home / 20,680.14-28,523.29-13,119.94

Finding the Fourth Proportional to 20,680.14, 28,523.29 and 13,119.94

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Solution

The fourth proportional to 20,680.14, 28,523.29 and 13,119.94 is: 18,095.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.14 : 28,523.29 = 13,119.94 : x
  2. Step 2: Convert to fraction form
    20,680.14/28,523.29 = 13,119.94/x
  3. Step 3: Cross multiply
    20,680.14x = 28,523.29 × 13,119.94
  4. Step 4: Simplify right side
    20,680.14x = 374,223,853.40
  5. Step 5: Solve for x
    x = 374,223,853.40/20,680.14
  6. Step 6: Final answer
    x = 18,095.81

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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.