Home / 19,865.85-27,415.05-10,913.54

Finding the Fourth Proportional to 19,865.85, 27,415.05 and 10,913.54

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Solution

The fourth proportional to 19,865.85, 27,415.05 and 10,913.54 is: 15,060.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,865.85 : 27,415.05 = 10,913.54 : x
  2. Step 2: Convert to fraction form
    19,865.85/27,415.05 = 10,913.54/x
  3. Step 3: Cross multiply
    19,865.85x = 27,415.05 × 10,913.54
  4. Step 4: Simplify right side
    19,865.85x = 299,195,107.70
  5. Step 5: Solve for x
    x = 299,195,107.70/19,865.85
  6. Step 6: Final answer
    x = 15,060.78

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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.