Home / 20,312.36-30,469.16-5,521.59

Finding the Fourth Proportional to 20,312.36, 30,469.16 and 5,521.59

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Solution

The fourth proportional to 20,312.36, 30,469.16 and 5,521.59 is: 8,282.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312.36 : 30,469.16 = 5,521.59 : x
  2. Step 2: Convert to fraction form
    20,312.36/30,469.16 = 5,521.59/x
  3. Step 3: Cross multiply
    20,312.36x = 30,469.16 × 5,521.59
  4. Step 4: Simplify right side
    20,312.36x = 168,238,181.56
  5. Step 5: Solve for x
    x = 168,238,181.56/20,312.36
  6. Step 6: Final answer
    x = 8,282.55

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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.