Home / 12,761.88-19,139.36-8,074.84

Finding the Fourth Proportional to 12,761.88, 19,139.36 and 8,074.84

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Solution

The fourth proportional to 12,761.88, 19,139.36 and 8,074.84 is: 12,110.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,761.88 : 19,139.36 = 8,074.84 : x
  2. Step 2: Convert to fraction form
    12,761.88/19,139.36 = 8,074.84/x
  3. Step 3: Cross multiply
    12,761.88x = 19,139.36 × 8,074.84
  4. Step 4: Simplify right side
    12,761.88x = 154,547,269.70
  5. Step 5: Solve for x
    x = 154,547,269.70/12,761.88
  6. Step 6: Final answer
    x = 12,110.07

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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.