Home / 13,377.15-18,469.43-8,343.40

Finding the Fourth Proportional to 13,377.15, 18,469.43 and 8,343.40

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Solution

The fourth proportional to 13,377.15, 18,469.43 and 8,343.40 is: 11,519.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,377.15 : 18,469.43 = 8,343.40 : x
  2. Step 2: Convert to fraction form
    13,377.15/18,469.43 = 8,343.40/x
  3. Step 3: Cross multiply
    13,377.15x = 18,469.43 × 8,343.40
  4. Step 4: Simplify right side
    13,377.15x = 154,097,842.26
  5. Step 5: Solve for x
    x = 154,097,842.26/13,377.15
  6. Step 6: Final answer
    x = 11,519.48

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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.