Home / 28,028.34-38,679.12-15,453.12

Finding the Fourth Proportional to 28,028.34, 38,679.12 and 15,453.12

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Solution

The fourth proportional to 28,028.34, 38,679.12 and 15,453.12 is: 21,325.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.34 : 38,679.12 = 15,453.12 : x
  2. Step 2: Convert to fraction form
    28,028.34/38,679.12 = 15,453.12/x
  3. Step 3: Cross multiply
    28,028.34x = 38,679.12 × 15,453.12
  4. Step 4: Simplify right side
    28,028.34x = 597,713,082.85
  5. Step 5: Solve for x
    x = 597,713,082.85/28,028.34
  6. Step 6: Final answer
    x = 21,325.31

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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.