Home / 13,201.16-18,200.82-9,428.84

Finding the Fourth Proportional to 13,201.16, 18,200.82 and 9,428.84

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Solution

The fourth proportional to 13,201.16, 18,200.82 and 9,428.84 is: 12,999.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,201.16 : 18,200.82 = 9,428.84 : x
  2. Step 2: Convert to fraction form
    13,201.16/18,200.82 = 9,428.84/x
  3. Step 3: Cross multiply
    13,201.16x = 18,200.82 × 9,428.84
  4. Step 4: Simplify right side
    13,201.16x = 171,612,619.65
  5. Step 5: Solve for x
    x = 171,612,619.65/13,201.16
  6. Step 6: Final answer
    x = 12,999.81

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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.