Home / 15,106.11-20,846.16-8,391.57

Finding the Fourth Proportional to 15,106.11, 20,846.16 and 8,391.57

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Solution

The fourth proportional to 15,106.11, 20,846.16 and 8,391.57 is: 11,580.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,106.11 : 20,846.16 = 8,391.57 : x
  2. Step 2: Convert to fraction form
    15,106.11/20,846.16 = 8,391.57/x
  3. Step 3: Cross multiply
    15,106.11x = 20,846.16 × 8,391.57
  4. Step 4: Simplify right side
    15,106.11x = 174,932,010.87
  5. Step 5: Solve for x
    x = 174,932,010.87/15,106.11
  6. Step 6: Final answer
    x = 11,580.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.