Home / 14,089.32-21,137.49-4,228.78

Finding the Fourth Proportional to 14,089.32, 21,137.49 and 4,228.78

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Solution

The fourth proportional to 14,089.32, 21,137.49 and 4,228.78 is: 6,344.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,089.32 : 21,137.49 = 4,228.78 : x
  2. Step 2: Convert to fraction form
    14,089.32/21,137.49 = 4,228.78/x
  3. Step 3: Cross multiply
    14,089.32x = 21,137.49 × 4,228.78
  4. Step 4: Simplify right side
    14,089.32x = 89,385,794.96
  5. Step 5: Solve for x
    x = 89,385,794.96/14,089.32
  6. Step 6: Final answer
    x = 6,344.22

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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.