Home / 20,402.99-28,153.37-11,449.96

Finding the Fourth Proportional to 20,402.99, 28,153.37 and 11,449.96

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Solution

The fourth proportional to 20,402.99, 28,153.37 and 11,449.96 is: 15,799.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402.99 : 28,153.37 = 11,449.96 : x
  2. Step 2: Convert to fraction form
    20,402.99/28,153.37 = 11,449.96/x
  3. Step 3: Cross multiply
    20,402.99x = 28,153.37 × 11,449.96
  4. Step 4: Simplify right side
    20,402.99x = 322,354,918.61
  5. Step 5: Solve for x
    x = 322,354,918.61/20,402.99
  6. Step 6: Final answer
    x = 15,799.40

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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.