Home / 20,739.81-28,625.58-13,184.67

Finding the Fourth Proportional to 20,739.81, 28,625.58 and 13,184.67

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Solution

The fourth proportional to 20,739.81, 28,625.58 and 13,184.67 is: 18,197.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739.81 : 28,625.58 = 13,184.67 : x
  2. Step 2: Convert to fraction form
    20,739.81/28,625.58 = 13,184.67/x
  3. Step 3: Cross multiply
    20,739.81x = 28,625.58 × 13,184.67
  4. Step 4: Simplify right side
    20,739.81x = 377,418,825.86
  5. Step 5: Solve for x
    x = 377,418,825.86/20,739.81
  6. Step 6: Final answer
    x = 18,197.80

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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.