Home / 15,106.20-20,846.23-8,391.63

Finding the Fourth Proportional to 15,106.20, 20,846.23 and 8,391.63

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Solution

The fourth proportional to 15,106.20, 20,846.23 and 8,391.63 is: 11,580.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,106.20 : 20,846.23 = 8,391.63 : x
  2. Step 2: Convert to fraction form
    15,106.20/20,846.23 = 8,391.63/x
  3. Step 3: Cross multiply
    15,106.20x = 20,846.23 × 8,391.63
  4. Step 4: Simplify right side
    15,106.20x = 174,933,849.05
  5. Step 5: Solve for x
    x = 174,933,849.05/15,106.20
  6. Step 6: Final answer
    x = 11,580.27

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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.