Home / 20,403.42-28,149.50-13,333.94

Finding the Fourth Proportional to 20,403.42, 28,149.50 and 13,333.94

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Solution

The fourth proportional to 20,403.42, 28,149.50 and 13,333.94 is: 18,396.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,403.42 : 28,149.50 = 13,333.94 : x
  2. Step 2: Convert to fraction form
    20,403.42/28,149.50 = 13,333.94/x
  3. Step 3: Cross multiply
    20,403.42x = 28,149.50 × 13,333.94
  4. Step 4: Simplify right side
    20,403.42x = 375,343,744.03
  5. Step 5: Solve for x
    x = 375,343,744.03/20,403.42
  6. Step 6: Final answer
    x = 18,396.12

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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.