Home / 28,445.24-42,662.88-12,859.16

Finding the Fourth Proportional to 28,445.24, 42,662.88 and 12,859.16

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Solution

The fourth proportional to 28,445.24, 42,662.88 and 12,859.16 is: 19,286.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,445.24 : 42,662.88 = 12,859.16 : x
  2. Step 2: Convert to fraction form
    28,445.24/42,662.88 = 12,859.16/x
  3. Step 3: Cross multiply
    28,445.24x = 42,662.88 × 12,859.16
  4. Step 4: Simplify right side
    28,445.24x = 548,608,799.98
  5. Step 5: Solve for x
    x = 548,608,799.98/28,445.24
  6. Step 6: Final answer
    x = 19,286.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.