Home / 15,107.06-20,845.50-8,392.79

Finding the Fourth Proportional to 15,107.06, 20,845.50 and 8,392.79

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Solution

The fourth proportional to 15,107.06, 20,845.50 and 8,392.79 is: 11,580.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,107.06 : 20,845.50 = 8,392.79 : x
  2. Step 2: Convert to fraction form
    15,107.06/20,845.50 = 8,392.79/x
  3. Step 3: Cross multiply
    15,107.06x = 20,845.50 × 8,392.79
  4. Step 4: Simplify right side
    15,107.06x = 174,951,903.95
  5. Step 5: Solve for x
    x = 174,951,903.95/15,107.06
  6. Step 6: Final answer
    x = 11,580.80

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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.