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Finding the Fourth Proportional to 12,406.66, 17,122.06 and 7,029.05

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Solution

The fourth proportional to 12,406.66, 17,122.06 and 7,029.05 is: 9,700.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,406.66 : 17,122.06 = 7,029.05 : x
  2. Step 2: Convert to fraction form
    12,406.66/17,122.06 = 7,029.05/x
  3. Step 3: Cross multiply
    12,406.66x = 17,122.06 × 7,029.05
  4. Step 4: Simplify right side
    12,406.66x = 120,351,815.84
  5. Step 5: Solve for x
    x = 120,351,815.84/12,406.66
  6. Step 6: Final answer
    x = 9,700.58

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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.