Home / 10,991.94-16,460.55-7,689.57

Finding the Fourth Proportional to 10,991.94, 16,460.55 and 7,689.57

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Solution

The fourth proportional to 10,991.94, 16,460.55 and 7,689.57 is: 11,515.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991.94 : 16,460.55 = 7,689.57 : x
  2. Step 2: Convert to fraction form
    10,991.94/16,460.55 = 7,689.57/x
  3. Step 3: Cross multiply
    10,991.94x = 16,460.55 × 7,689.57
  4. Step 4: Simplify right side
    10,991.94x = 126,574,518.57
  5. Step 5: Solve for x
    x = 126,574,518.57/10,991.94
  6. Step 6: Final answer
    x = 11,515.22

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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.