Home / 28,020.85-38,668.24-15,274.15

Finding the Fourth Proportional to 28,020.85, 38,668.24 and 15,274.15

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Solution

The fourth proportional to 28,020.85, 38,668.24 and 15,274.15 is: 21,078.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.85 : 38,668.24 = 15,274.15 : x
  2. Step 2: Convert to fraction form
    28,020.85/38,668.24 = 15,274.15/x
  3. Step 3: Cross multiply
    28,020.85x = 38,668.24 × 15,274.15
  4. Step 4: Simplify right side
    28,020.85x = 590,624,498.00
  5. Step 5: Solve for x
    x = 590,624,498.00/28,020.85
  6. Step 6: Final answer
    x = 21,078.04

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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.