Home / 11,439.53-15,777.63-7,661.48

Finding the Fourth Proportional to 11,439.53, 15,777.63 and 7,661.48

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Solution

The fourth proportional to 11,439.53, 15,777.63 and 7,661.48 is: 10,566.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.53 : 15,777.63 = 7,661.48 : x
  2. Step 2: Convert to fraction form
    11,439.53/15,777.63 = 7,661.48/x
  3. Step 3: Cross multiply
    11,439.53x = 15,777.63 × 7,661.48
  4. Step 4: Simplify right side
    11,439.53x = 120,879,996.69
  5. Step 5: Solve for x
    x = 120,879,996.69/11,439.53
  6. Step 6: Final answer
    x = 10,566.87

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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.