Home / 10,809.90-16,190.55-6,581.70

Finding the Fourth Proportional to 10,809.90, 16,190.55 and 6,581.70

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Solution

The fourth proportional to 10,809.90, 16,190.55 and 6,581.70 is: 9,857.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,809.90 : 16,190.55 = 6,581.70 : x
  2. Step 2: Convert to fraction form
    10,809.90/16,190.55 = 6,581.70/x
  3. Step 3: Cross multiply
    10,809.90x = 16,190.55 × 6,581.70
  4. Step 4: Simplify right side
    10,809.90x = 106,561,342.94
  5. Step 5: Solve for x
    x = 106,561,342.94/10,809.90
  6. Step 6: Final answer
    x = 9,857.75

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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.