Home / 16,515.20-24,772.80-12,578.60

Finding the Fourth Proportional to 16,515.20, 24,772.80 and 12,578.60

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Solution

The fourth proportional to 16,515.20, 24,772.80 and 12,578.60 is: 18,867.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,515.20 : 24,772.80 = 12,578.60 : x
  2. Step 2: Convert to fraction form
    16,515.20/24,772.80 = 12,578.60/x
  3. Step 3: Cross multiply
    16,515.20x = 24,772.80 × 12,578.60
  4. Step 4: Simplify right side
    16,515.20x = 311,607,142.08
  5. Step 5: Solve for x
    x = 311,607,142.08/16,515.20
  6. Step 6: Final answer
    x = 18,867.90

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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.