Home / 10,920.71-16,381.07-5,074.13

Finding the Fourth Proportional to 10,920.71, 16,381.07 and 5,074.13

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Solution

The fourth proportional to 10,920.71, 16,381.07 and 5,074.13 is: 7,611.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.71 : 16,381.07 = 5,074.13 : x
  2. Step 2: Convert to fraction form
    10,920.71/16,381.07 = 5,074.13/x
  3. Step 3: Cross multiply
    10,920.71x = 16,381.07 × 5,074.13
  4. Step 4: Simplify right side
    10,920.71x = 83,119,571.44
  5. Step 5: Solve for x
    x = 83,119,571.44/10,920.71
  6. Step 6: Final answer
    x = 7,611.19

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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.