Home / 20,344.86-28,074-11,846.61

Finding the Fourth Proportional to 20,344.86, 28,074 and 11,846.61

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Solution

The fourth proportional to 20,344.86, 28,074 and 11,846.61 is: 16,347.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,344.86 : 28,074 = 11,846.61 : x
  2. Step 2: Convert to fraction form
    20,344.86/28,074 = 11,846.61/x
  3. Step 3: Cross multiply
    20,344.86x = 28,074 × 11,846.61
  4. Step 4: Simplify right side
    20,344.86x = 332,581,729.14
  5. Step 5: Solve for x
    x = 332,581,729.14/20,344.86
  6. Step 6: Final answer
    x = 16,347.21

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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.