Home / 12,772.80-19,137.12-9,056.88

Finding the Fourth Proportional to 12,772.80, 19,137.12 and 9,056.88

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Solution

The fourth proportional to 12,772.80, 19,137.12 and 9,056.88 is: 13,569.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,772.80 : 19,137.12 = 9,056.88 : x
  2. Step 2: Convert to fraction form
    12,772.80/19,137.12 = 9,056.88/x
  3. Step 3: Cross multiply
    12,772.80x = 19,137.12 × 9,056.88
  4. Step 4: Simplify right side
    12,772.80x = 173,322,599.39
  5. Step 5: Solve for x
    x = 173,322,599.39/12,772.80
  6. Step 6: Final answer
    x = 13,569.66

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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.