Home / 11,687.51-17,520.87-4,290.28

Finding the Fourth Proportional to 11,687.51, 17,520.87 and 4,290.28

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Solution

The fourth proportional to 11,687.51, 17,520.87 and 4,290.28 is: 6,431.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,687.51 : 17,520.87 = 4,290.28 : x
  2. Step 2: Convert to fraction form
    11,687.51/17,520.87 = 4,290.28/x
  3. Step 3: Cross multiply
    11,687.51x = 17,520.87 × 4,290.28
  4. Step 4: Simplify right side
    11,687.51x = 75,169,438.14
  5. Step 5: Solve for x
    x = 75,169,438.14/11,687.51
  6. Step 6: Final answer
    x = 6,431.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.