Home / 13,905.30-19,189.80-7,617.68

Finding the Fourth Proportional to 13,905.30, 19,189.80 and 7,617.68

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Solution

The fourth proportional to 13,905.30, 19,189.80 and 7,617.68 is: 10,512.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.30 : 19,189.80 = 7,617.68 : x
  2. Step 2: Convert to fraction form
    13,905.30/19,189.80 = 7,617.68/x
  3. Step 3: Cross multiply
    13,905.30x = 19,189.80 × 7,617.68
  4. Step 4: Simplify right side
    13,905.30x = 146,181,755.66
  5. Step 5: Solve for x
    x = 146,181,755.66/13,905.30
  6. Step 6: Final answer
    x = 10,512.66

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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.