Home / 10,939.20-16,412.85-4,370.10

Finding the Fourth Proportional to 10,939.20, 16,412.85 and 4,370.10

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Solution

The fourth proportional to 10,939.20, 16,412.85 and 4,370.10 is: 6,556.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.20 : 16,412.85 = 4,370.10 : x
  2. Step 2: Convert to fraction form
    10,939.20/16,412.85 = 4,370.10/x
  3. Step 3: Cross multiply
    10,939.20x = 16,412.85 × 4,370.10
  4. Step 4: Simplify right side
    10,939.20x = 71,725,795.79
  5. Step 5: Solve for x
    x = 71,725,795.79/10,939.20
  6. Step 6: Final answer
    x = 6,556.77

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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.