Home / 28,028.16-38,679.15-15,453.36

Finding the Fourth Proportional to 28,028.16, 38,679.15 and 15,453.36

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Solution

The fourth proportional to 28,028.16, 38,679.15 and 15,453.36 is: 21,325.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.16 : 38,679.15 = 15,453.36 : x
  2. Step 2: Convert to fraction form
    28,028.16/38,679.15 = 15,453.36/x
  3. Step 3: Cross multiply
    28,028.16x = 38,679.15 × 15,453.36
  4. Step 4: Simplify right side
    28,028.16x = 597,722,829.44
  5. Step 5: Solve for x
    x = 597,722,829.44/28,028.16
  6. Step 6: Final answer
    x = 21,325.80

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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.