Home / 28,021.30-38,668.77-15,446.02

Finding the Fourth Proportional to 28,021.30, 38,668.77 and 15,446.02

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Solution

The fourth proportional to 28,021.30, 38,668.77 and 15,446.02 is: 21,315.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,021.30 : 38,668.77 = 15,446.02 : x
  2. Step 2: Convert to fraction form
    28,021.30/38,668.77 = 15,446.02/x
  3. Step 3: Cross multiply
    28,021.30x = 38,668.77 × 15,446.02
  4. Step 4: Simplify right side
    28,021.30x = 597,278,594.80
  5. Step 5: Solve for x
    x = 597,278,594.80/28,021.30
  6. Step 6: Final answer
    x = 21,315.16

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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.