Home / 55,381.28-83,082.88-20,321.24

Finding the Fourth Proportional to 55,381.28, 83,082.88 and 20,321.24

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Solution

The fourth proportional to 55,381.28, 83,082.88 and 20,321.24 is: 30,485.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,381.28 : 83,082.88 = 20,321.24 : x
  2. Step 2: Convert to fraction form
    55,381.28/83,082.88 = 20,321.24/x
  3. Step 3: Cross multiply
    55,381.28x = 83,082.88 × 20,321.24
  4. Step 4: Simplify right side
    55,381.28x = 1,688,347,144.37
  5. Step 5: Solve for x
    x = 1,688,347,144.37/55,381.28
  6. Step 6: Final answer
    x = 30,485.88

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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.