Home / 28,131.18-38,825.58-16,191.99

Finding the Fourth Proportional to 28,131.18, 38,825.58 and 16,191.99

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Solution

The fourth proportional to 28,131.18, 38,825.58 and 16,191.99 is: 22,347.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,131.18 : 38,825.58 = 16,191.99 : x
  2. Step 2: Convert to fraction form
    28,131.18/38,825.58 = 16,191.99/x
  3. Step 3: Cross multiply
    28,131.18x = 38,825.58 × 16,191.99
  4. Step 4: Simplify right side
    28,131.18x = 628,663,403.10
  5. Step 5: Solve for x
    x = 628,663,403.10/28,131.18
  6. Step 6: Final answer
    x = 22,347.57

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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.