Home / 12,406.03-17,120.36-6,740.82

Finding the Fourth Proportional to 12,406.03, 17,120.36 and 6,740.82

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Solution

The fourth proportional to 12,406.03, 17,120.36 and 6,740.82 is: 9,302.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,406.03 : 17,120.36 = 6,740.82 : x
  2. Step 2: Convert to fraction form
    12,406.03/17,120.36 = 6,740.82/x
  3. Step 3: Cross multiply
    12,406.03x = 17,120.36 × 6,740.82
  4. Step 4: Simplify right side
    12,406.03x = 115,405,281.95
  5. Step 5: Solve for x
    x = 115,405,281.95/12,406.03
  6. Step 6: Final answer
    x = 9,302.36

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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.