Home / 20,627.64-28,472.61-13,175.64

Finding the Fourth Proportional to 20,627.64, 28,472.61 and 13,175.64

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Solution

The fourth proportional to 20,627.64, 28,472.61 and 13,175.64 is: 18,186.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.64 : 28,472.61 = 13,175.64 : x
  2. Step 2: Convert to fraction form
    20,627.64/28,472.61 = 13,175.64/x
  3. Step 3: Cross multiply
    20,627.64x = 28,472.61 × 13,175.64
  4. Step 4: Simplify right side
    20,627.64x = 375,144,859.22
  5. Step 5: Solve for x
    x = 375,144,859.22/20,627.64
  6. Step 6: Final answer
    x = 18,186.51

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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.