Home / 15,107.35-20,847.25-8,392.59

Finding the Fourth Proportional to 15,107.35, 20,847.25 and 8,392.59

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Solution

The fourth proportional to 15,107.35, 20,847.25 and 8,392.59 is: 11,581.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,107.35 : 20,847.25 = 8,392.59 : x
  2. Step 2: Convert to fraction form
    15,107.35/20,847.25 = 8,392.59/x
  3. Step 3: Cross multiply
    15,107.35x = 20,847.25 × 8,392.59
  4. Step 4: Simplify right side
    15,107.35x = 174,962,421.88
  5. Step 5: Solve for x
    x = 174,962,421.88/15,107.35
  6. Step 6: Final answer
    x = 11,581.28

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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.