Home / 21,330.90-31,992.70-5,744.88

Finding the Fourth Proportional to 21,330.90, 31,992.70 and 5,744.88

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Solution

The fourth proportional to 21,330.90, 31,992.70 and 5,744.88 is: 8,616.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.90 : 31,992.70 = 5,744.88 : x
  2. Step 2: Convert to fraction form
    21,330.90/31,992.70 = 5,744.88/x
  3. Step 3: Cross multiply
    21,330.90x = 31,992.70 × 5,744.88
  4. Step 4: Simplify right side
    21,330.90x = 183,794,222.38
  5. Step 5: Solve for x
    x = 183,794,222.38/21,330.90
  6. Step 6: Final answer
    x = 8,616.34

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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.