Home / 13,999.17-19,318.85-7,711.54

Finding the Fourth Proportional to 13,999.17, 19,318.85 and 7,711.54

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Solution

The fourth proportional to 13,999.17, 19,318.85 and 7,711.54 is: 10,641.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.17 : 19,318.85 = 7,711.54 : x
  2. Step 2: Convert to fraction form
    13,999.17/19,318.85 = 7,711.54/x
  3. Step 3: Cross multiply
    13,999.17x = 19,318.85 × 7,711.54
  4. Step 4: Simplify right side
    13,999.17x = 148,978,045.97
  5. Step 5: Solve for x
    x = 148,978,045.97/13,999.17
  6. Step 6: Final answer
    x = 10,641.92

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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.