Home / 15,876.44-21,904.48-9,911.56

Finding the Fourth Proportional to 15,876.44, 21,904.48 and 9,911.56

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Solution

The fourth proportional to 15,876.44, 21,904.48 and 9,911.56 is: 13,674.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,876.44 : 21,904.48 = 9,911.56 : x
  2. Step 2: Convert to fraction form
    15,876.44/21,904.48 = 9,911.56/x
  3. Step 3: Cross multiply
    15,876.44x = 21,904.48 × 9,911.56
  4. Step 4: Simplify right side
    15,876.44x = 217,107,592.57
  5. Step 5: Solve for x
    x = 217,107,592.57/15,876.44
  6. Step 6: Final answer
    x = 13,674.83

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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.