Home / 13,961.20-19,263.12-7,911.56

Finding the Fourth Proportional to 13,961.20, 19,263.12 and 7,911.56

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Solution

The fourth proportional to 13,961.20, 19,263.12 and 7,911.56 is: 10,916.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,961.20 : 19,263.12 = 7,911.56 : x
  2. Step 2: Convert to fraction form
    13,961.20/19,263.12 = 7,911.56/x
  3. Step 3: Cross multiply
    13,961.20x = 19,263.12 × 7,911.56
  4. Step 4: Simplify right side
    13,961.20x = 152,401,329.67
  5. Step 5: Solve for x
    x = 152,401,329.67/13,961.20
  6. Step 6: Final answer
    x = 10,916.06

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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.