Home / 20,403.99-28,150.28-13,334.51

Finding the Fourth Proportional to 20,403.99, 28,150.28 and 13,334.51

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Solution

The fourth proportional to 20,403.99, 28,150.28 and 13,334.51 is: 18,396.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,403.99 : 28,150.28 = 13,334.51 : x
  2. Step 2: Convert to fraction form
    20,403.99/28,150.28 = 13,334.51/x
  3. Step 3: Cross multiply
    20,403.99x = 28,150.28 × 13,334.51
  4. Step 4: Simplify right side
    20,403.99x = 375,369,982.74
  5. Step 5: Solve for x
    x = 375,369,982.74/20,403.99
  6. Step 6: Final answer
    x = 18,396.89

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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.