Home / 13,179.60-19,776.60-5,389.20

Finding the Fourth Proportional to 13,179.60, 19,776.60 and 5,389.20

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Solution

The fourth proportional to 13,179.60, 19,776.60 and 5,389.20 is: 8,086.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.60 : 19,776.60 = 5,389.20 : x
  2. Step 2: Convert to fraction form
    13,179.60/19,776.60 = 5,389.20/x
  3. Step 3: Cross multiply
    13,179.60x = 19,776.60 × 5,389.20
  4. Step 4: Simplify right side
    13,179.60x = 106,580,052.72
  5. Step 5: Solve for x
    x = 106,580,052.72/13,179.60
  6. Step 6: Final answer
    x = 8,086.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.