Home / 10,137.96-13,990.14-5,661.54

Finding the Fourth Proportional to 10,137.96, 13,990.14 and 5,661.54

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Solution

The fourth proportional to 10,137.96, 13,990.14 and 5,661.54 is: 7,812.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,137.96 : 13,990.14 = 5,661.54 : x
  2. Step 2: Convert to fraction form
    10,137.96/13,990.14 = 5,661.54/x
  3. Step 3: Cross multiply
    10,137.96x = 13,990.14 × 5,661.54
  4. Step 4: Simplify right side
    10,137.96x = 79,205,737.22
  5. Step 5: Solve for x
    x = 79,205,737.22/10,137.96
  6. Step 6: Final answer
    x = 7,812.79

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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.