Home / 12,699.75-17,521.61-8,226.93

Finding the Fourth Proportional to 12,699.75, 17,521.61 and 8,226.93

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Solution

The fourth proportional to 12,699.75, 17,521.61 and 8,226.93 is: 11,350.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,699.75 : 17,521.61 = 8,226.93 : x
  2. Step 2: Convert to fraction form
    12,699.75/17,521.61 = 8,226.93/x
  3. Step 3: Cross multiply
    12,699.75x = 17,521.61 × 8,226.93
  4. Step 4: Simplify right side
    12,699.75x = 144,149,017.82
  5. Step 5: Solve for x
    x = 144,149,017.82/12,699.75
  6. Step 6: Final answer
    x = 11,350.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.