Home / 21,790.28-30,082.38-14,729.24

Finding the Fourth Proportional to 21,790.28, 30,082.38 and 14,729.24

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Solution

The fourth proportional to 21,790.28, 30,082.38 and 14,729.24 is: 20,334.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,790.28 : 30,082.38 = 14,729.24 : x
  2. Step 2: Convert to fraction form
    21,790.28/30,082.38 = 14,729.24/x
  3. Step 3: Cross multiply
    21,790.28x = 30,082.38 × 14,729.24
  4. Step 4: Simplify right side
    21,790.28x = 443,090,594.79
  5. Step 5: Solve for x
    x = 443,090,594.79/21,790.28
  6. Step 6: Final answer
    x = 20,334.32

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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.