Home / 20,445.63-28,213.70-11,493.02

Finding the Fourth Proportional to 20,445.63, 28,213.70 and 11,493.02

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Solution

The fourth proportional to 20,445.63, 28,213.70 and 11,493.02 is: 15,859.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,445.63 : 28,213.70 = 11,493.02 : x
  2. Step 2: Convert to fraction form
    20,445.63/28,213.70 = 11,493.02/x
  3. Step 3: Cross multiply
    20,445.63x = 28,213.70 × 11,493.02
  4. Step 4: Simplify right side
    20,445.63x = 324,260,419.84
  5. Step 5: Solve for x
    x = 324,260,419.84/20,445.63
  6. Step 6: Final answer
    x = 15,859.64

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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.