Home / 28,108.54-38,790.12-15,361.66

Finding the Fourth Proportional to 28,108.54, 38,790.12 and 15,361.66

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Solution

The fourth proportional to 28,108.54, 38,790.12 and 15,361.66 is: 21,199.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108.54 : 38,790.12 = 15,361.66 : x
  2. Step 2: Convert to fraction form
    28,108.54/38,790.12 = 15,361.66/x
  3. Step 3: Cross multiply
    28,108.54x = 38,790.12 × 15,361.66
  4. Step 4: Simplify right side
    28,108.54x = 595,880,634.80
  5. Step 5: Solve for x
    x = 595,880,634.80/28,108.54
  6. Step 6: Final answer
    x = 21,199.27

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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.