Home / 19,154.58-28,706.94-10,720.71

Finding the Fourth Proportional to 19,154.58, 28,706.94 and 10,720.71

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Solution

The fourth proportional to 19,154.58, 28,706.94 and 10,720.71 is: 16,067.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,154.58 : 28,706.94 = 10,720.71 : x
  2. Step 2: Convert to fraction form
    19,154.58/28,706.94 = 10,720.71/x
  3. Step 3: Cross multiply
    19,154.58x = 28,706.94 × 10,720.71
  4. Step 4: Simplify right side
    19,154.58x = 307,758,778.73
  5. Step 5: Solve for x
    x = 307,758,778.73/19,154.58
  6. Step 6: Final answer
    x = 16,067.11

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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.