Home / 13,376.26-18,455.61-8,665.30

Finding the Fourth Proportional to 13,376.26, 18,455.61 and 8,665.30

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Solution

The fourth proportional to 13,376.26, 18,455.61 and 8,665.30 is: 11,955.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376.26 : 18,455.61 = 8,665.30 : x
  2. Step 2: Convert to fraction form
    13,376.26/18,455.61 = 8,665.30/x
  3. Step 3: Cross multiply
    13,376.26x = 18,455.61 × 8,665.30
  4. Step 4: Simplify right side
    13,376.26x = 159,923,397.33
  5. Step 5: Solve for x
    x = 159,923,397.33/13,376.26
  6. Step 6: Final answer
    x = 11,955.76

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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.