Home / 21,521.82-32,247.36-20,701.65

Finding the Fourth Proportional to 21,521.82, 32,247.36 and 20,701.65

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Solution

The fourth proportional to 21,521.82, 32,247.36 and 20,701.65 is: 31,018.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,521.82 : 32,247.36 = 20,701.65 : x
  2. Step 2: Convert to fraction form
    21,521.82/32,247.36 = 20,701.65/x
  3. Step 3: Cross multiply
    21,521.82x = 32,247.36 × 20,701.65
  4. Step 4: Simplify right side
    21,521.82x = 667,573,560.14
  5. Step 5: Solve for x
    x = 667,573,560.14/21,521.82
  6. Step 6: Final answer
    x = 31,018.45

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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.