Home / 13,059.19-18,026.82-8,812.75

Finding the Fourth Proportional to 13,059.19, 18,026.82 and 8,812.75

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Solution

The fourth proportional to 13,059.19, 18,026.82 and 8,812.75 is: 12,165.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,059.19 : 18,026.82 = 8,812.75 : x
  2. Step 2: Convert to fraction form
    13,059.19/18,026.82 = 8,812.75/x
  3. Step 3: Cross multiply
    13,059.19x = 18,026.82 × 8,812.75
  4. Step 4: Simplify right side
    13,059.19x = 158,865,857.96
  5. Step 5: Solve for x
    x = 158,865,857.96/13,059.19
  6. Step 6: Final answer
    x = 12,165.06

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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.