Home / 12,891.29-19,332.74-4,124.12

Finding the Fourth Proportional to 12,891.29, 19,332.74 and 4,124.12

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Solution

The fourth proportional to 12,891.29, 19,332.74 and 4,124.12 is: 6,184.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,891.29 : 19,332.74 = 4,124.12 : x
  2. Step 2: Convert to fraction form
    12,891.29/19,332.74 = 4,124.12/x
  3. Step 3: Cross multiply
    12,891.29x = 19,332.74 × 4,124.12
  4. Step 4: Simplify right side
    12,891.29x = 79,730,453.34
  5. Step 5: Solve for x
    x = 79,730,453.34/12,891.29
  6. Step 6: Final answer
    x = 6,184.83

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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.