Home / 12,521.88-18,782.83-5,125.06

Finding the Fourth Proportional to 12,521.88, 18,782.83 and 5,125.06

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Solution

The fourth proportional to 12,521.88, 18,782.83 and 5,125.06 is: 7,687.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.88 : 18,782.83 = 5,125.06 : x
  2. Step 2: Convert to fraction form
    12,521.88/18,782.83 = 5,125.06/x
  3. Step 3: Cross multiply
    12,521.88x = 18,782.83 × 5,125.06
  4. Step 4: Simplify right side
    12,521.88x = 96,263,130.72
  5. Step 5: Solve for x
    x = 96,263,130.72/12,521.88
  6. Step 6: Final answer
    x = 7,687.59

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Similar ratio
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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.