Home / 13,709.47-18,917.92-8,043.62

Finding the Fourth Proportional to 13,709.47, 18,917.92 and 8,043.62

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Solution

The fourth proportional to 13,709.47, 18,917.92 and 8,043.62 is: 11,099.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,709.47 : 18,917.92 = 8,043.62 : x
  2. Step 2: Convert to fraction form
    13,709.47/18,917.92 = 8,043.62/x
  3. Step 3: Cross multiply
    13,709.47x = 18,917.92 × 8,043.62
  4. Step 4: Simplify right side
    13,709.47x = 152,168,559.67
  5. Step 5: Solve for x
    x = 152,168,559.67/13,709.47
  6. Step 6: Final answer
    x = 11,099.52

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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.