Home / 20,334.24-28,064.16-12,378.24

Finding the Fourth Proportional to 20,334.24, 28,064.16 and 12,378.24

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Solution

The fourth proportional to 20,334.24, 28,064.16 and 12,378.24 is: 17,083.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,334.24 : 28,064.16 = 12,378.24 : x
  2. Step 2: Convert to fraction form
    20,334.24/28,064.16 = 12,378.24/x
  3. Step 3: Cross multiply
    20,334.24x = 28,064.16 × 12,378.24
  4. Step 4: Simplify right side
    20,334.24x = 347,384,907.88
  5. Step 5: Solve for x
    x = 347,384,907.88/20,334.24
  6. Step 6: Final answer
    x = 17,083.74

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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.