Home / 21,125.44-31,693.20-7,274.56

Finding the Fourth Proportional to 21,125.44, 31,693.20 and 7,274.56

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Solution

The fourth proportional to 21,125.44, 31,693.20 and 7,274.56 is: 10,913.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.44 : 31,693.20 = 7,274.56 : x
  2. Step 2: Convert to fraction form
    21,125.44/31,693.20 = 7,274.56/x
  3. Step 3: Cross multiply
    21,125.44x = 31,693.20 × 7,274.56
  4. Step 4: Simplify right side
    21,125.44x = 230,554,084.99
  5. Step 5: Solve for x
    x = 230,554,084.99/21,125.44
  6. Step 6: Final answer
    x = 10,913.58

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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.