Home / 10,889.33-15,021.74-6,412.87

Finding the Fourth Proportional to 10,889.33, 15,021.74 and 6,412.87

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Solution

The fourth proportional to 10,889.33, 15,021.74 and 6,412.87 is: 8,846.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,889.33 : 15,021.74 = 6,412.87 : x
  2. Step 2: Convert to fraction form
    10,889.33/15,021.74 = 6,412.87/x
  3. Step 3: Cross multiply
    10,889.33x = 15,021.74 × 6,412.87
  4. Step 4: Simplify right side
    10,889.33x = 96,332,358.62
  5. Step 5: Solve for x
    x = 96,332,358.62/10,889.33
  6. Step 6: Final answer
    x = 8,846.49

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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.