Home / 10,979.37-16,470.68-5,135.49

Finding the Fourth Proportional to 10,979.37, 16,470.68 and 5,135.49

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Solution

The fourth proportional to 10,979.37, 16,470.68 and 5,135.49 is: 7,703.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.37 : 16,470.68 = 5,135.49 : x
  2. Step 2: Convert to fraction form
    10,979.37/16,470.68 = 5,135.49/x
  3. Step 3: Cross multiply
    10,979.37x = 16,470.68 × 5,135.49
  4. Step 4: Simplify right side
    10,979.37x = 84,584,986.76
  5. Step 5: Solve for x
    x = 84,584,986.76/10,979.37
  6. Step 6: Final answer
    x = 7,703.99

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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.