Home / 12,775.88-19,166.13-5,279.45

Finding the Fourth Proportional to 12,775.88, 19,166.13 and 5,279.45

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Solution

The fourth proportional to 12,775.88, 19,166.13 and 5,279.45 is: 7,920.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775.88 : 19,166.13 = 5,279.45 : x
  2. Step 2: Convert to fraction form
    12,775.88/19,166.13 = 5,279.45/x
  3. Step 3: Cross multiply
    12,775.88x = 19,166.13 × 5,279.45
  4. Step 4: Simplify right side
    12,775.88x = 101,186,625.03
  5. Step 5: Solve for x
    x = 101,186,625.03/12,775.88
  6. Step 6: Final answer
    x = 7,920.13

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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.