Home / 12,894.07-19,167.25-12,515.71

Finding the Fourth Proportional to 12,894.07, 19,167.25 and 12,515.71

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Solution

The fourth proportional to 12,894.07, 19,167.25 and 12,515.71 is: 18,604.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,894.07 : 19,167.25 = 12,515.71 : x
  2. Step 2: Convert to fraction form
    12,894.07/19,167.25 = 12,515.71/x
  3. Step 3: Cross multiply
    12,894.07x = 19,167.25 × 12,515.71
  4. Step 4: Simplify right side
    12,894.07x = 239,891,742.50
  5. Step 5: Solve for x
    x = 239,891,742.50/12,894.07
  6. Step 6: Final answer
    x = 18,604.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.