Home / 21,418.02-29,557.26-11,986.56

Finding the Fourth Proportional to 21,418.02, 29,557.26 and 11,986.56

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Solution

The fourth proportional to 21,418.02, 29,557.26 and 11,986.56 is: 16,541.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,418.02 : 29,557.26 = 11,986.56 : x
  2. Step 2: Convert to fraction form
    21,418.02/29,557.26 = 11,986.56/x
  3. Step 3: Cross multiply
    21,418.02x = 29,557.26 × 11,986.56
  4. Step 4: Simplify right side
    21,418.02x = 354,289,870.43
  5. Step 5: Solve for x
    x = 354,289,870.43/21,418.02
  6. Step 6: Final answer
    x = 16,541.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.