Home / 21,334.56-31,991.07-12,452.94

Finding the Fourth Proportional to 21,334.56, 31,991.07 and 12,452.94

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Solution

The fourth proportional to 21,334.56, 31,991.07 and 12,452.94 is: 18,673.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,334.56 : 31,991.07 = 12,452.94 : x
  2. Step 2: Convert to fraction form
    21,334.56/31,991.07 = 12,452.94/x
  3. Step 3: Cross multiply
    21,334.56x = 31,991.07 × 12,452.94
  4. Step 4: Simplify right side
    21,334.56x = 398,382,875.25
  5. Step 5: Solve for x
    x = 398,382,875.25/21,334.56
  6. Step 6: Final answer
    x = 18,673.12

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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.