Home / 15,917.28-21,940.57-12,554.62

Finding the Fourth Proportional to 15,917.28, 21,940.57 and 12,554.62

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Solution

The fourth proportional to 15,917.28, 21,940.57 and 12,554.62 is: 17,305.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,917.28 : 21,940.57 = 12,554.62 : x
  2. Step 2: Convert to fraction form
    15,917.28/21,940.57 = 12,554.62/x
  3. Step 3: Cross multiply
    15,917.28x = 21,940.57 × 12,554.62
  4. Step 4: Simplify right side
    15,917.28x = 275,455,518.93
  5. Step 5: Solve for x
    x = 275,455,518.93/15,917.28
  6. Step 6: Final answer
    x = 17,305.44

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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.