Home / 6,921.27-10,389.43-6,423.73

Finding the Fourth Proportional to 6,921.27, 10,389.43 and 6,423.73

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Solution

The fourth proportional to 6,921.27, 10,389.43 and 6,423.73 is: 9,642.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.27 : 10,389.43 = 6,423.73 : x
  2. Step 2: Convert to fraction form
    6,921.27/10,389.43 = 6,423.73/x
  3. Step 3: Cross multiply
    6,921.27x = 10,389.43 × 6,423.73
  4. Step 4: Simplify right side
    6,921.27x = 66,738,851.14
  5. Step 5: Solve for x
    x = 66,738,851.14/6,921.27
  6. Step 6: Final answer
    x = 9,642.57

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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.