Home / 15,106.32-20,847.38-8,391.96

Finding the Fourth Proportional to 15,106.32, 20,847.38 and 8,391.96

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Solution

The fourth proportional to 15,106.32, 20,847.38 and 8,391.96 is: 11,581.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,106.32 : 20,847.38 = 8,391.96 : x
  2. Step 2: Convert to fraction form
    15,106.32/20,847.38 = 8,391.96/x
  3. Step 3: Cross multiply
    15,106.32x = 20,847.38 × 8,391.96
  4. Step 4: Simplify right side
    15,106.32x = 174,950,337.11
  5. Step 5: Solve for x
    x = 174,950,337.11/15,106.32
  6. Step 6: Final answer
    x = 11,581.27

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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.