Home / 13,905.66-19,189.62-7,618.08

Finding the Fourth Proportional to 13,905.66, 19,189.62 and 7,618.08

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Solution

The fourth proportional to 13,905.66, 19,189.62 and 7,618.08 is: 10,512.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.66 : 19,189.62 = 7,618.08 : x
  2. Step 2: Convert to fraction form
    13,905.66/19,189.62 = 7,618.08/x
  3. Step 3: Cross multiply
    13,905.66x = 19,189.62 × 7,618.08
  4. Step 4: Simplify right side
    13,905.66x = 146,188,060.33
  5. Step 5: Solve for x
    x = 146,188,060.33/13,905.66
  6. Step 6: Final answer
    x = 10,512.85

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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.