Home / 28,925.75-39,917.82-16,989.28

Finding the Fourth Proportional to 28,925.75, 39,917.82 and 16,989.28

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Solution

The fourth proportional to 28,925.75, 39,917.82 and 16,989.28 is: 23,445.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,925.75 : 39,917.82 = 16,989.28 : x
  2. Step 2: Convert to fraction form
    28,925.75/39,917.82 = 16,989.28/x
  3. Step 3: Cross multiply
    28,925.75x = 39,917.82 × 16,989.28
  4. Step 4: Simplify right side
    28,925.75x = 678,175,020.97
  5. Step 5: Solve for x
    x = 678,175,020.97/28,925.75
  6. Step 6: Final answer
    x = 23,445.38

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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.