Home / 15,815.70-21,825.27-8,741.70

Finding the Fourth Proportional to 15,815.70, 21,825.27 and 8,741.70

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Solution

The fourth proportional to 15,815.70, 21,825.27 and 8,741.70 is: 12,063.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.70 : 21,825.27 = 8,741.70 : x
  2. Step 2: Convert to fraction form
    15,815.70/21,825.27 = 8,741.70/x
  3. Step 3: Cross multiply
    15,815.70x = 21,825.27 × 8,741.70
  4. Step 4: Simplify right side
    15,815.70x = 190,789,962.76
  5. Step 5: Solve for x
    x = 190,789,962.76/15,815.70
  6. Step 6: Final answer
    x = 12,063.33

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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.