Home / 10,929.55-16,378.81-4,991.84

Finding the Fourth Proportional to 10,929.55, 16,378.81 and 4,991.84

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Solution

The fourth proportional to 10,929.55, 16,378.81 and 4,991.84 is: 7,480.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.55 : 16,378.81 = 4,991.84 : x
  2. Step 2: Convert to fraction form
    10,929.55/16,378.81 = 4,991.84/x
  3. Step 3: Cross multiply
    10,929.55x = 16,378.81 × 4,991.84
  4. Step 4: Simplify right side
    10,929.55x = 81,760,458.09
  5. Step 5: Solve for x
    x = 81,760,458.09/10,929.55
  6. Step 6: Final answer
    x = 7,480.68

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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.