Home / 20,347.26-28,079.94-11,395.14

Finding the Fourth Proportional to 20,347.26, 28,079.94 and 11,395.14

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Solution

The fourth proportional to 20,347.26, 28,079.94 and 11,395.14 is: 15,725.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347.26 : 28,079.94 = 11,395.14 : x
  2. Step 2: Convert to fraction form
    20,347.26/28,079.94 = 11,395.14/x
  3. Step 3: Cross multiply
    20,347.26x = 28,079.94 × 11,395.14
  4. Step 4: Simplify right side
    20,347.26x = 319,974,847.49
  5. Step 5: Solve for x
    x = 319,974,847.49/20,347.26
  6. Step 6: Final answer
    x = 15,725.70

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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.