Home / 12,406.84-17,120.82-7,100.44

Finding the Fourth Proportional to 12,406.84, 17,120.82 and 7,100.44

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Solution

The fourth proportional to 12,406.84, 17,120.82 and 7,100.44 is: 9,798.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,406.84 : 17,120.82 = 7,100.44 : x
  2. Step 2: Convert to fraction form
    12,406.84/17,120.82 = 7,100.44/x
  3. Step 3: Cross multiply
    12,406.84x = 17,120.82 × 7,100.44
  4. Step 4: Simplify right side
    12,406.84x = 121,565,355.16
  5. Step 5: Solve for x
    x = 121,565,355.16/12,406.84
  6. Step 6: Final answer
    x = 9,798.25

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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.