Home / 13,144.63-18,108.48-9,158.62

Finding the Fourth Proportional to 13,144.63, 18,108.48 and 9,158.62

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Solution

The fourth proportional to 13,144.63, 18,108.48 and 9,158.62 is: 12,617.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.63 : 18,108.48 = 9,158.62 : x
  2. Step 2: Convert to fraction form
    13,144.63/18,108.48 = 9,158.62/x
  3. Step 3: Cross multiply
    13,144.63x = 18,108.48 × 9,158.62
  4. Step 4: Simplify right side
    13,144.63x = 165,848,687.10
  5. Step 5: Solve for x
    x = 165,848,687.10/13,144.63
  6. Step 6: Final answer
    x = 12,617.22

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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.