Home / 13,905.96-19,190.08-7,618.20

Finding the Fourth Proportional to 13,905.96, 19,190.08 and 7,618.20

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Solution

The fourth proportional to 13,905.96, 19,190.08 and 7,618.20 is: 10,513.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.96 : 19,190.08 = 7,618.20 : x
  2. Step 2: Convert to fraction form
    13,905.96/19,190.08 = 7,618.20/x
  3. Step 3: Cross multiply
    13,905.96x = 19,190.08 × 7,618.20
  4. Step 4: Simplify right side
    13,905.96x = 146,193,867.46
  5. Step 5: Solve for x
    x = 146,193,867.46/13,905.96
  6. Step 6: Final answer
    x = 10,513.04

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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.