Home / 28,098.12-38,722.14-20,126.64

Finding the Fourth Proportional to 28,098.12, 38,722.14 and 20,126.64

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Solution

The fourth proportional to 28,098.12, 38,722.14 and 20,126.64 is: 27,736.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,098.12 : 38,722.14 = 20,126.64 : x
  2. Step 2: Convert to fraction form
    28,098.12/38,722.14 = 20,126.64/x
  3. Step 3: Cross multiply
    28,098.12x = 38,722.14 × 20,126.64
  4. Step 4: Simplify right side
    28,098.12x = 779,346,571.81
  5. Step 5: Solve for x
    x = 779,346,571.81/28,098.12
  6. Step 6: Final answer
    x = 27,736.61

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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.