Home / 28,151.46-38,851.68-16,821

Finding the Fourth Proportional to 28,151.46, 38,851.68 and 16,821

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Solution

The fourth proportional to 28,151.46, 38,851.68 and 16,821 is: 23,214.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,151.46 : 38,851.68 = 16,821 : x
  2. Step 2: Convert to fraction form
    28,151.46/38,851.68 = 16,821/x
  3. Step 3: Cross multiply
    28,151.46x = 38,851.68 × 16,821
  4. Step 4: Simplify right side
    28,151.46x = 653,524,109.28
  5. Step 5: Solve for x
    x = 653,524,109.28/28,151.46
  6. Step 6: Final answer
    x = 23,214.57

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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.