Home / 20,418.64-28,180.77-12,465.48

Finding the Fourth Proportional to 20,418.64, 28,180.77 and 12,465.48

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Solution

The fourth proportional to 20,418.64, 28,180.77 and 12,465.48 is: 17,204.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,418.64 : 28,180.77 = 12,465.48 : x
  2. Step 2: Convert to fraction form
    20,418.64/28,180.77 = 12,465.48/x
  3. Step 3: Cross multiply
    20,418.64x = 28,180.77 × 12,465.48
  4. Step 4: Simplify right side
    20,418.64x = 351,286,824.82
  5. Step 5: Solve for x
    x = 351,286,824.82/20,418.64
  6. Step 6: Final answer
    x = 17,204.22

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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.