Home / 10,890.46-16,330.50-6,388.87

Finding the Fourth Proportional to 10,890.46, 16,330.50 and 6,388.87

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Solution

The fourth proportional to 10,890.46, 16,330.50 and 6,388.87 is: 9,580.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.46 : 16,330.50 = 6,388.87 : x
  2. Step 2: Convert to fraction form
    10,890.46/16,330.50 = 6,388.87/x
  3. Step 3: Cross multiply
    10,890.46x = 16,330.50 × 6,388.87
  4. Step 4: Simplify right side
    10,890.46x = 104,333,441.54
  5. Step 5: Solve for x
    x = 104,333,441.54/10,890.46
  6. Step 6: Final answer
    x = 9,580.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.