Home / 28,028.70-38,679.56-15,453.46

Finding the Fourth Proportional to 28,028.70, 38,679.56 and 15,453.46

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Solution

The fourth proportional to 28,028.70, 38,679.56 and 15,453.46 is: 21,325.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.70 : 38,679.56 = 15,453.46 : x
  2. Step 2: Convert to fraction form
    28,028.70/38,679.56 = 15,453.46/x
  3. Step 3: Cross multiply
    28,028.70x = 38,679.56 × 15,453.46
  4. Step 4: Simplify right side
    28,028.70x = 597,733,033.28
  5. Step 5: Solve for x
    x = 597,733,033.28/28,028.70
  6. Step 6: Final answer
    x = 21,325.75

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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.