Home / 13,013.85-17,954.28-8,540.09

Finding the Fourth Proportional to 13,013.85, 17,954.28 and 8,540.09

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Solution

The fourth proportional to 13,013.85, 17,954.28 and 8,540.09 is: 11,782.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,013.85 : 17,954.28 = 8,540.09 : x
  2. Step 2: Convert to fraction form
    13,013.85/17,954.28 = 8,540.09/x
  3. Step 3: Cross multiply
    13,013.85x = 17,954.28 × 8,540.09
  4. Step 4: Simplify right side
    13,013.85x = 153,331,077.31
  5. Step 5: Solve for x
    x = 153,331,077.31/13,013.85
  6. Step 6: Final answer
    x = 11,782.15

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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.