Home / 12,579.60-17,359.56-8,104.40

Finding the Fourth Proportional to 12,579.60, 17,359.56 and 8,104.40

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Solution

The fourth proportional to 12,579.60, 17,359.56 and 8,104.40 is: 11,183.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.60 : 17,359.56 = 8,104.40 : x
  2. Step 2: Convert to fraction form
    12,579.60/17,359.56 = 8,104.40/x
  3. Step 3: Cross multiply
    12,579.60x = 17,359.56 × 8,104.40
  4. Step 4: Simplify right side
    12,579.60x = 140,688,818.06
  5. Step 5: Solve for x
    x = 140,688,818.06/12,579.60
  6. Step 6: Final answer
    x = 11,183.89

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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.