Home / 12,375.11-17,087.44-11,430.51

Finding the Fourth Proportional to 12,375.11, 17,087.44 and 11,430.51

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Solution

The fourth proportional to 12,375.11, 17,087.44 and 11,430.51 is: 15,783.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,375.11 : 17,087.44 = 11,430.51 : x
  2. Step 2: Convert to fraction form
    12,375.11/17,087.44 = 11,430.51/x
  3. Step 3: Cross multiply
    12,375.11x = 17,087.44 × 11,430.51
  4. Step 4: Simplify right side
    12,375.11x = 195,318,153.79
  5. Step 5: Solve for x
    x = 195,318,153.79/12,375.11
  6. Step 6: Final answer
    x = 15,783.15

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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.