Home / 13,811.36-19,059.32-7,761.11

Finding the Fourth Proportional to 13,811.36, 19,059.32 and 7,761.11

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Solution

The fourth proportional to 13,811.36, 19,059.32 and 7,761.11 is: 10,710.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.36 : 19,059.32 = 7,761.11 : x
  2. Step 2: Convert to fraction form
    13,811.36/19,059.32 = 7,761.11/x
  3. Step 3: Cross multiply
    13,811.36x = 19,059.32 × 7,761.11
  4. Step 4: Simplify right side
    13,811.36x = 147,921,440.24
  5. Step 5: Solve for x
    x = 147,921,440.24/13,811.36
  6. Step 6: Final answer
    x = 10,710.13

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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.