Home / 28,082.74-38,728.84-18,515.84

Finding the Fourth Proportional to 28,082.74, 38,728.84 and 18,515.84

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Solution

The fourth proportional to 28,082.74, 38,728.84 and 18,515.84 is: 25,535.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,082.74 : 38,728.84 = 18,515.84 : x
  2. Step 2: Convert to fraction form
    28,082.74/38,728.84 = 18,515.84/x
  3. Step 3: Cross multiply
    28,082.74x = 38,728.84 × 18,515.84
  4. Step 4: Simplify right side
    28,082.74x = 717,097,004.83
  5. Step 5: Solve for x
    x = 717,097,004.83/28,082.74
  6. Step 6: Final answer
    x = 25,535.15

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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.